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Finding the Fourth Proportional to 565,998.68, 781,007.28 and 382,636.28

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Solution

The fourth proportional to 565,998.68, 781,007.28 and 382,636.28 is: 527,990.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,998.68 : 781,007.28 = 382,636.28 : x
  2. Step 2: Convert to fraction form
    565,998.68/781,007.28 = 382,636.28/x
  3. Step 3: Cross multiply
    565,998.68x = 781,007.28 × 382,636.28
  4. Step 4: Simplify right side
    565,998.68x = 298,841,720,272.12
  5. Step 5: Solve for x
    x = 298,841,720,272.12/565,998.68
  6. Step 6: Final answer
    x = 527,990.14

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.