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Finding the Fourth Proportional to 439,888.16, 663,128.59 and 410,593.16

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Solution

The fourth proportional to 439,888.16, 663,128.59 and 410,593.16 is: 618,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,888.16 : 663,128.59 = 410,593.16 : x
  2. Step 2: Convert to fraction form
    439,888.16/663,128.59 = 410,593.16/x
  3. Step 3: Cross multiply
    439,888.16x = 663,128.59 × 410,593.16
  4. Step 4: Simplify right side
    439,888.16x = 272,276,063,254.44
  5. Step 5: Solve for x
    x = 272,276,063,254.44/439,888.16
  6. Step 6: Final answer
    x = 618,966.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.