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Finding the Fourth Proportional to 75,098.70, 112,429.35 and 45,501.30

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Solution

The fourth proportional to 75,098.70, 112,429.35 and 45,501.30 is: 68,119.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,098.70 : 112,429.35 = 45,501.30 : x
  2. Step 2: Convert to fraction form
    75,098.70/112,429.35 = 45,501.30/x
  3. Step 3: Cross multiply
    75,098.70x = 112,429.35 × 45,501.30
  4. Step 4: Simplify right side
    75,098.70x = 5,115,681,583.16
  5. Step 5: Solve for x
    x = 5,115,681,583.16/75,098.70
  6. Step 6: Final answer
    x = 68,119.44

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1.5x scale

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.