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Finding the Fourth Proportional to 61,615.39, 85,052.24 and 47,976.43

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Solution

The fourth proportional to 61,615.39, 85,052.24 and 47,976.43 is: 66,225.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.39 : 85,052.24 = 47,976.43 : x
  2. Step 2: Convert to fraction form
    61,615.39/85,052.24 = 47,976.43/x
  3. Step 3: Cross multiply
    61,615.39x = 85,052.24 × 47,976.43
  4. Step 4: Simplify right side
    61,615.39x = 4,080,502,838.70
  5. Step 5: Solve for x
    x = 4,080,502,838.70/61,615.39
  6. Step 6: Final answer
    x = 66,225.38

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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.