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Finding the Fourth Proportional to 58,572.36, 80,841.78 and 39,715.56

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Solution

The fourth proportional to 58,572.36, 80,841.78 and 39,715.56 is: 54,815.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,572.36 : 80,841.78 = 39,715.56 : x
  2. Step 2: Convert to fraction form
    58,572.36/80,841.78 = 39,715.56/x
  3. Step 3: Cross multiply
    58,572.36x = 80,841.78 × 39,715.56
  4. Step 4: Simplify right side
    58,572.36x = 3,210,676,564.10
  5. Step 5: Solve for x
    x = 3,210,676,564.10/58,572.36
  6. Step 6: Final answer
    x = 54,815.56

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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.