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Finding the Fourth Proportional to 71,385.95, 98,511.14 and 39,554.57

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Solution

The fourth proportional to 71,385.95, 98,511.14 and 39,554.57 is: 54,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,385.95 : 98,511.14 = 39,554.57 : x
  2. Step 2: Convert to fraction form
    71,385.95/98,511.14 = 39,554.57/x
  3. Step 3: Cross multiply
    71,385.95x = 98,511.14 × 39,554.57
  4. Step 4: Simplify right side
    71,385.95x = 3,896,565,437.75
  5. Step 5: Solve for x
    x = 3,896,565,437.75/71,385.95
  6. Step 6: Final answer
    x = 54,584.49

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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.