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Finding the Fourth Proportional to 101,066.40, 151,432.74 and 61,503.84

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Solution

The fourth proportional to 101,066.40, 151,432.74 and 61,503.84 is: 92,154.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,066.40 : 151,432.74 = 61,503.84 : x
  2. Step 2: Convert to fraction form
    101,066.40/151,432.74 = 61,503.84/x
  3. Step 3: Cross multiply
    101,066.40x = 151,432.74 × 61,503.84
  4. Step 4: Simplify right side
    101,066.40x = 9,313,695,011.72
  5. Step 5: Solve for x
    x = 9,313,695,011.72/101,066.40
  6. Step 6: Final answer
    x = 92,154.22

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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.