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Finding the Fourth Proportional to 145,876.55, 218,851.72 and 40,695.44

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Solution

The fourth proportional to 145,876.55, 218,851.72 and 40,695.44 is: 61,053.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,876.55 : 218,851.72 = 40,695.44 : x
  2. Step 2: Convert to fraction form
    145,876.55/218,851.72 = 40,695.44/x
  3. Step 3: Cross multiply
    145,876.55x = 218,851.72 × 40,695.44
  4. Step 4: Simplify right side
    145,876.55x = 8,906,265,844.16
  5. Step 5: Solve for x
    x = 8,906,265,844.16/145,876.55
  6. Step 6: Final answer
    x = 61,053.45

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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.