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Finding the Fourth Proportional to 292,848.80, 439,273.20 and 71,232.80

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Solution

The fourth proportional to 292,848.80, 439,273.20 and 71,232.80 is: 106,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,848.80 : 439,273.20 = 71,232.80 : x
  2. Step 2: Convert to fraction form
    292,848.80/439,273.20 = 71,232.80/x
  3. Step 3: Cross multiply
    292,848.80x = 439,273.20 × 71,232.80
  4. Step 4: Simplify right side
    292,848.80x = 31,290,660,000.96
  5. Step 5: Solve for x
    x = 31,290,660,000.96/292,848.80
  6. Step 6: Final answer
    x = 106,849.20

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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.