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Finding the Fourth Proportional to 118,089.68, 176,983.30 and 64,780.88

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Solution

The fourth proportional to 118,089.68, 176,983.30 and 64,780.88 is: 97,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,089.68 : 176,983.30 = 64,780.88 : x
  2. Step 2: Convert to fraction form
    118,089.68/176,983.30 = 64,780.88/x
  3. Step 3: Cross multiply
    118,089.68x = 176,983.30 × 64,780.88
  4. Step 4: Simplify right side
    118,089.68x = 11,465,133,919.30
  5. Step 5: Solve for x
    x = 11,465,133,919.30/118,089.68
  6. Step 6: Final answer
    x = 97,088.36

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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.