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Finding the Fourth Proportional to 61,132.70, 85,644.10 and 61,132.70

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Solution

The fourth proportional to 61,132.70, 85,644.10 and 61,132.70 is: 85,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,132.70 : 85,644.10 = 61,132.70 : x
  2. Step 2: Convert to fraction form
    61,132.70/85,644.10 = 61,132.70/x
  3. Step 3: Cross multiply
    61,132.70x = 85,644.10 × 61,132.70
  4. Step 4: Simplify right side
    61,132.70x = 5,235,655,072.07
  5. Step 5: Solve for x
    x = 5,235,655,072.07/61,132.70
  6. Step 6: Final answer
    x = 85,644.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.