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Finding the Fourth Proportional to 82,731.80, 124,097.70 and 60,699.80

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Solution

The fourth proportional to 82,731.80, 124,097.70 and 60,699.80 is: 91,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,731.80 : 124,097.70 = 60,699.80 : x
  2. Step 2: Convert to fraction form
    82,731.80/124,097.70 = 60,699.80/x
  3. Step 3: Cross multiply
    82,731.80x = 124,097.70 × 60,699.80
  4. Step 4: Simplify right side
    82,731.80x = 7,532,705,570.46
  5. Step 5: Solve for x
    x = 7,532,705,570.46/82,731.80
  6. Step 6: Final answer
    x = 91,049.70

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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.