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Finding the Fourth Proportional to 93,572.40, 140,139.90 and 91,693.20

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Solution

The fourth proportional to 93,572.40, 140,139.90 and 91,693.20 is: 137,325.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,572.40 : 140,139.90 = 91,693.20 : x
  2. Step 2: Convert to fraction form
    93,572.40/140,139.90 = 91,693.20/x
  3. Step 3: Cross multiply
    93,572.40x = 140,139.90 × 91,693.20
  4. Step 4: Simplify right side
    93,572.40x = 12,849,875,878.68
  5. Step 5: Solve for x
    x = 12,849,875,878.68/93,572.40
  6. Step 6: Final answer
    x = 137,325.49

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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.