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Finding the Fourth Proportional to 60,508.77, 83,415.54 and 40,358.30

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Solution

The fourth proportional to 60,508.77, 83,415.54 and 40,358.30 is: 55,636.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,508.77 : 83,415.54 = 40,358.30 : x
  2. Step 2: Convert to fraction form
    60,508.77/83,415.54 = 40,358.30/x
  3. Step 3: Cross multiply
    60,508.77x = 83,415.54 × 40,358.30
  4. Step 4: Simplify right side
    60,508.77x = 3,366,508,970.90
  5. Step 5: Solve for x
    x = 3,366,508,970.90/60,508.77
  6. Step 6: Final answer
    x = 55,636.71

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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.