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Finding the Fourth Proportional to 64,340.40, 96,478.20 and 38,053.20

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Solution

The fourth proportional to 64,340.40, 96,478.20 and 38,053.20 is: 57,060.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,340.40 : 96,478.20 = 38,053.20 : x
  2. Step 2: Convert to fraction form
    64,340.40/96,478.20 = 38,053.20/x
  3. Step 3: Cross multiply
    64,340.40x = 96,478.20 × 38,053.20
  4. Step 4: Simplify right side
    64,340.40x = 3,671,304,240.24
  5. Step 5: Solve for x
    x = 3,671,304,240.24/64,340.40
  6. Step 6: Final answer
    x = 57,060.64

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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.