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Finding the Fourth Proportional to 56,691.05, 78,207.47 and 36,554.40

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Solution

The fourth proportional to 56,691.05, 78,207.47 and 36,554.40 is: 50,428.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.05 : 78,207.47 = 36,554.40 : x
  2. Step 2: Convert to fraction form
    56,691.05/78,207.47 = 36,554.40/x
  3. Step 3: Cross multiply
    56,691.05x = 78,207.47 × 36,554.40
  4. Step 4: Simplify right side
    56,691.05x = 2,858,826,945.85
  5. Step 5: Solve for x
    x = 2,858,826,945.85/56,691.05
  6. Step 6: Final answer
    x = 50,428.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.