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Finding the Fourth Proportional to 124,201.20, 186,425.40 and 57,656.40

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Solution

The fourth proportional to 124,201.20, 186,425.40 and 57,656.40 is: 86,541.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,201.20 : 186,425.40 = 57,656.40 : x
  2. Step 2: Convert to fraction form
    124,201.20/186,425.40 = 57,656.40/x
  3. Step 3: Cross multiply
    124,201.20x = 186,425.40 × 57,656.40
  4. Step 4: Simplify right side
    124,201.20x = 10,748,617,432.56
  5. Step 5: Solve for x
    x = 10,748,617,432.56/124,201.20
  6. Step 6: Final answer
    x = 86,541.98

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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.