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Finding the Fourth Proportional to 129,925.60, 194,830.80 and 59,826.40

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Solution

The fourth proportional to 129,925.60, 194,830.80 and 59,826.40 is: 89,713.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,925.60 : 194,830.80 = 59,826.40 : x
  2. Step 2: Convert to fraction form
    129,925.60/194,830.80 = 59,826.40/x
  3. Step 3: Cross multiply
    129,925.60x = 194,830.80 × 59,826.40
  4. Step 4: Simplify right side
    129,925.60x = 11,656,025,373.12
  5. Step 5: Solve for x
    x = 11,656,025,373.12/129,925.60
  6. Step 6: Final answer
    x = 89,713.08

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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.