Home / 71,511.93-98,686.14-39,680.76

Finding the Fourth Proportional to 71,511.93, 98,686.14 and 39,680.76

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Solution

The fourth proportional to 71,511.93, 98,686.14 and 39,680.76 is: 54,759.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511.93 : 98,686.14 = 39,680.76 : x
  2. Step 2: Convert to fraction form
    71,511.93/98,686.14 = 39,680.76/x
  3. Step 3: Cross multiply
    71,511.93x = 98,686.14 × 39,680.76
  4. Step 4: Simplify right side
    71,511.93x = 3,915,941,036.67
  5. Step 5: Solve for x
    x = 3,915,941,036.67/71,511.93
  6. Step 6: Final answer
    x = 54,759.27

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Half scale
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Double scale
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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.