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Finding the Fourth Proportional to 65,957.44, 91,023.60 and 47,139.52

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Solution

The fourth proportional to 65,957.44, 91,023.60 and 47,139.52 is: 65,054.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,957.44 : 91,023.60 = 47,139.52 : x
  2. Step 2: Convert to fraction form
    65,957.44/91,023.60 = 47,139.52/x
  3. Step 3: Cross multiply
    65,957.44x = 91,023.60 × 47,139.52
  4. Step 4: Simplify right side
    65,957.44x = 4,290,808,812.67
  5. Step 5: Solve for x
    x = 4,290,808,812.67/65,957.44
  6. Step 6: Final answer
    x = 65,054.20

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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.