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Finding the Fourth Proportional to 125,160.95, 187,752.94 and 40,921.56

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Solution

The fourth proportional to 125,160.95, 187,752.94 and 40,921.56 is: 61,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,160.95 : 187,752.94 = 40,921.56 : x
  2. Step 2: Convert to fraction form
    125,160.95/187,752.94 = 40,921.56/x
  3. Step 3: Cross multiply
    125,160.95x = 187,752.94 × 40,921.56
  4. Step 4: Simplify right side
    125,160.95x = 7,683,143,097.08
  5. Step 5: Solve for x
    x = 7,683,143,097.08/125,160.95
  6. Step 6: Final answer
    x = 61,386.10

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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.