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Finding the Fourth Proportional to 52,591.69, 78,868.08 and 15,139.12

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Solution

The fourth proportional to 52,591.69, 78,868.08 and 15,139.12 is: 22,703.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,591.69 : 78,868.08 = 15,139.12 : x
  2. Step 2: Convert to fraction form
    52,591.69/78,868.08 = 15,139.12/x
  3. Step 3: Cross multiply
    52,591.69x = 78,868.08 × 15,139.12
  4. Step 4: Simplify right side
    52,591.69x = 1,193,993,327.29
  5. Step 5: Solve for x
    x = 1,193,993,327.29/52,591.69
  6. Step 6: Final answer
    x = 22,703.08

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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.