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Finding the Fourth Proportional to 124,191.70, 186,311.85 and 53,114.20

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Solution

The fourth proportional to 124,191.70, 186,311.85 and 53,114.20 is: 79,681.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,191.70 : 186,311.85 = 53,114.20 : x
  2. Step 2: Convert to fraction form
    124,191.70/186,311.85 = 53,114.20/x
  3. Step 3: Cross multiply
    124,191.70x = 186,311.85 × 53,114.20
  4. Step 4: Simplify right side
    124,191.70x = 9,895,804,863.27
  5. Step 5: Solve for x
    x = 9,895,804,863.27/124,191.70
  6. Step 6: Final answer
    x = 79,681.69

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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.