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Finding the Fourth Proportional to 64,357.20, 96,535.80 and 54,637.20

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Solution

The fourth proportional to 64,357.20, 96,535.80 and 54,637.20 is: 81,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,357.20 : 96,535.80 = 54,637.20 : x
  2. Step 2: Convert to fraction form
    64,357.20/96,535.80 = 54,637.20/x
  3. Step 3: Cross multiply
    64,357.20x = 96,535.80 × 54,637.20
  4. Step 4: Simplify right side
    64,357.20x = 5,274,445,811.76
  5. Step 5: Solve for x
    x = 5,274,445,811.76/64,357.20
  6. Step 6: Final answer
    x = 81,955.80

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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.