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Finding the Fourth Proportional to 60,718.60, 91,029.30 and 25,629.40

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Solution

The fourth proportional to 60,718.60, 91,029.30 and 25,629.40 is: 38,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,718.60 : 91,029.30 = 25,629.40 : x
  2. Step 2: Convert to fraction form
    60,718.60/91,029.30 = 25,629.40/x
  3. Step 3: Cross multiply
    60,718.60x = 91,029.30 × 25,629.40
  4. Step 4: Simplify right side
    60,718.60x = 2,333,026,341.42
  5. Step 5: Solve for x
    x = 2,333,026,341.42/60,718.60
  6. Step 6: Final answer
    x = 38,423.59

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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.