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Finding the Fourth Proportional to 61,275.20, 91,759.20 and 48,987.20

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Solution

The fourth proportional to 61,275.20, 91,759.20 and 48,987.20 is: 73,358.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,275.20 : 91,759.20 = 48,987.20 : x
  2. Step 2: Convert to fraction form
    61,275.20/91,759.20 = 48,987.20/x
  3. Step 3: Cross multiply
    61,275.20x = 91,759.20 × 48,987.20
  4. Step 4: Simplify right side
    61,275.20x = 4,495,026,282.24
  5. Step 5: Solve for x
    x = 4,495,026,282.24/61,275.20
  6. Step 6: Final answer
    x = 73,358.00

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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.