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Finding the Fourth Proportional to 115,862.70, 173,821.80 and 48,357.20

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Solution

The fourth proportional to 115,862.70, 173,821.80 and 48,357.20 is: 72,547.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,862.70 : 173,821.80 = 48,357.20 : x
  2. Step 2: Convert to fraction form
    115,862.70/173,821.80 = 48,357.20/x
  3. Step 3: Cross multiply
    115,862.70x = 173,821.80 × 48,357.20
  4. Step 4: Simplify right side
    115,862.70x = 8,405,534,677.85
  5. Step 5: Solve for x
    x = 8,405,534,677.85/115,862.70
  6. Step 6: Final answer
    x = 72,547.37

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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.