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Finding the Fourth Proportional to 530,553.60, 732,140.10 and 288,829.98

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Solution

The fourth proportional to 530,553.60, 732,140.10 and 288,829.98 is: 398,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,553.60 : 732,140.10 = 288,829.98 : x
  2. Step 2: Convert to fraction form
    530,553.60/732,140.10 = 288,829.98/x
  3. Step 3: Cross multiply
    530,553.60x = 732,140.10 × 288,829.98
  4. Step 4: Simplify right side
    530,553.60x = 211,464,010,440.20
  5. Step 5: Solve for x
    x = 211,464,010,440.20/530,553.60
  6. Step 6: Final answer
    x = 398,572.38

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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.