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Finding the Fourth Proportional to 612,102,586.20, 918,153,879.30 and 612,102,586.20

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Solution

The fourth proportional to 612,102,586.20, 918,153,879.30 and 612,102,586.20 is: 918,153,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,102,586.20 : 918,153,879.30 = 612,102,586.20 : x
  2. Step 2: Convert to fraction form
    612,102,586.20/918,153,879.30 = 612,102,586.20/x
  3. Step 3: Cross multiply
    612,102,586.20x = 918,153,879.30 × 612,102,586.20
  4. Step 4: Simplify right side
    612,102,586.20x = 562,004,364,049,092,672
  5. Step 5: Solve for x
    x = 562,004,364,049,092,672/612,102,586.20
  6. Step 6: Final answer
    x = 918,153,879.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.