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Finding the Fourth Proportional to 61,412.68, 91,640.04 and 54,793.36

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Solution

The fourth proportional to 61,412.68, 91,640.04 and 54,793.36 is: 81,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,412.68 : 91,640.04 = 54,793.36 : x
  2. Step 2: Convert to fraction form
    61,412.68/91,640.04 = 54,793.36/x
  3. Step 3: Cross multiply
    61,412.68x = 91,640.04 × 54,793.36
  4. Step 4: Simplify right side
    61,412.68x = 5,021,265,702.13
  5. Step 5: Solve for x
    x = 5,021,265,702.13/61,412.68
  6. Step 6: Final answer
    x = 81,762.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.