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Finding the Fourth Proportional to 125,304.32, 187,956.32 and 30,534.40

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Solution

The fourth proportional to 125,304.32, 187,956.32 and 30,534.40 is: 45,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,304.32 : 187,956.32 = 30,534.40 : x
  2. Step 2: Convert to fraction form
    125,304.32/187,956.32 = 30,534.40/x
  3. Step 3: Cross multiply
    125,304.32x = 187,956.32 × 30,534.40
  4. Step 4: Simplify right side
    125,304.32x = 5,739,133,457.41
  5. Step 5: Solve for x
    x = 5,739,133,457.41/125,304.32
  6. Step 6: Final answer
    x = 45,801.56

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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.