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Finding the Fourth Proportional to 93,140.80, 139,700.40 and 26,591.20

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Solution

The fourth proportional to 93,140.80, 139,700.40 and 26,591.20 is: 39,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,140.80 : 139,700.40 = 26,591.20 : x
  2. Step 2: Convert to fraction form
    93,140.80/139,700.40 = 26,591.20/x
  3. Step 3: Cross multiply
    93,140.80x = 139,700.40 × 26,591.20
  4. Step 4: Simplify right side
    93,140.80x = 3,714,801,276.48
  5. Step 5: Solve for x
    x = 3,714,801,276.48/93,140.80
  6. Step 6: Final answer
    x = 39,883.72

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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.