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Finding the Fourth Proportional to 530,605.86, 732,211.93 and 288,887.90

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Solution

The fourth proportional to 530,605.86, 732,211.93 and 288,887.90 is: 398,652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,605.86 : 732,211.93 = 288,887.90 : x
  2. Step 2: Convert to fraction form
    530,605.86/732,211.93 = 288,887.90/x
  3. Step 3: Cross multiply
    530,605.86x = 732,211.93 × 288,887.90
  4. Step 4: Simplify right side
    530,605.86x = 211,527,163,512.70
  5. Step 5: Solve for x
    x = 211,527,163,512.70/530,605.86
  6. Step 6: Final answer
    x = 398,652.15

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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.