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Finding the Fourth Proportional to 638,516.88, 958,398.60 and 527,329.80

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Solution

The fourth proportional to 638,516.88, 958,398.60 and 527,329.80 is: 791,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,516.88 : 958,398.60 = 527,329.80 : x
  2. Step 2: Convert to fraction form
    638,516.88/958,398.60 = 527,329.80/x
  3. Step 3: Cross multiply
    638,516.88x = 958,398.60 × 527,329.80
  4. Step 4: Simplify right side
    638,516.88x = 505,392,142,058.28
  5. Step 5: Solve for x
    x = 505,392,142,058.28/638,516.88
  6. Step 6: Final answer
    x = 791,509.45

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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.