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Finding the Fourth Proportional to 483,612.30, 725,418.45 and 188,124.30

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Solution

The fourth proportional to 483,612.30, 725,418.45 and 188,124.30 is: 282,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,612.30 : 725,418.45 = 188,124.30 : x
  2. Step 2: Convert to fraction form
    483,612.30/725,418.45 = 188,124.30/x
  3. Step 3: Cross multiply
    483,612.30x = 725,418.45 × 188,124.30
  4. Step 4: Simplify right side
    483,612.30x = 136,468,838,113.34
  5. Step 5: Solve for x
    x = 136,468,838,113.34/483,612.30
  6. Step 6: Final answer
    x = 282,186.45

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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.