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Finding the Fourth Proportional to 530,140.80, 794,938.80 and 156,115.20

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Solution

The fourth proportional to 530,140.80, 794,938.80 and 156,115.20 is: 234,092.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,140.80 : 794,938.80 = 156,115.20 : x
  2. Step 2: Convert to fraction form
    530,140.80/794,938.80 = 156,115.20/x
  3. Step 3: Cross multiply
    530,140.80x = 794,938.80 × 156,115.20
  4. Step 4: Simplify right side
    530,140.80x = 124,102,029,749.76
  5. Step 5: Solve for x
    x = 124,102,029,749.76/530,140.80
  6. Step 6: Final answer
    x = 234,092.58

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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.