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Finding the Fourth Proportional to 107,154.60, 147,876.86 and 59,412.40

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Solution

The fourth proportional to 107,154.60, 147,876.86 and 59,412.40 is: 81,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,154.60 : 147,876.86 = 59,412.40 : x
  2. Step 2: Convert to fraction form
    107,154.60/147,876.86 = 59,412.40/x
  3. Step 3: Cross multiply
    107,154.60x = 147,876.86 × 59,412.40
  4. Step 4: Simplify right side
    107,154.60x = 8,785,719,157.06
  5. Step 5: Solve for x
    x = 8,785,719,157.06/107,154.60
  6. Step 6: Final answer
    x = 81,991.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.