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Finding the Fourth Proportional to 84,993,187.10, 127,489,780.65 and 83,103,619.10

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Solution

The fourth proportional to 84,993,187.10, 127,489,780.65 and 83,103,619.10 is: 124,655,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,993,187.10 : 127,489,780.65 = 83,103,619.10 : x
  2. Step 2: Convert to fraction form
    84,993,187.10/127,489,780.65 = 83,103,619.10/x
  3. Step 3: Cross multiply
    84,993,187.10x = 127,489,780.65 × 83,103,619.10
  4. Step 4: Simplify right side
    84,993,187.10x = 10,594,862,170,280,150
  5. Step 5: Solve for x
    x = 10,594,862,170,280,150/84,993,187.10
  6. Step 6: Final answer
    x = 124,655,428.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.