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Finding the Fourth Proportional to 72,862.46, 109,153.47 and 44,700.28

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Solution

The fourth proportional to 72,862.46, 109,153.47 and 44,700.28 is: 66,964.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.46 : 109,153.47 = 44,700.28 : x
  2. Step 2: Convert to fraction form
    72,862.46/109,153.47 = 44,700.28/x
  3. Step 3: Cross multiply
    72,862.46x = 109,153.47 × 44,700.28
  4. Step 4: Simplify right side
    72,862.46x = 4,879,190,287.34
  5. Step 5: Solve for x
    x = 4,879,190,287.34/72,862.46
  6. Step 6: Final answer
    x = 66,964.39

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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.