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Finding the Fourth Proportional to 58,671.28, 80,965.52 and 31,813.28

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Solution

The fourth proportional to 58,671.28, 80,965.52 and 31,813.28 is: 43,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,671.28 : 80,965.52 = 31,813.28 : x
  2. Step 2: Convert to fraction form
    58,671.28/80,965.52 = 31,813.28/x
  3. Step 3: Cross multiply
    58,671.28x = 80,965.52 × 31,813.28
  4. Step 4: Simplify right side
    58,671.28x = 2,575,778,758.11
  5. Step 5: Solve for x
    x = 2,575,778,758.11/58,671.28
  6. Step 6: Final answer
    x = 43,901.87

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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.