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Finding the Fourth Proportional to 369,968.90, 554,953.35 and 120,650.90

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Solution

The fourth proportional to 369,968.90, 554,953.35 and 120,650.90 is: 180,976.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,968.90 : 554,953.35 = 120,650.90 : x
  2. Step 2: Convert to fraction form
    369,968.90/554,953.35 = 120,650.90/x
  3. Step 3: Cross multiply
    369,968.90x = 554,953.35 × 120,650.90
  4. Step 4: Simplify right side
    369,968.90x = 66,955,621,135.52
  5. Step 5: Solve for x
    x = 66,955,621,135.52/369,968.90
  6. Step 6: Final answer
    x = 180,976.35

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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.