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Finding the Fourth Proportional to 74,862,315.80, 112,069,524.90 and 65,904,363.80

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Solution

The fourth proportional to 74,862,315.80, 112,069,524.90 and 65,904,363.80 is: 98,659,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,862,315.80 : 112,069,524.90 = 65,904,363.80 : x
  2. Step 2: Convert to fraction form
    74,862,315.80/112,069,524.90 = 65,904,363.80/x
  3. Step 3: Cross multiply
    74,862,315.80x = 112,069,524.90 × 65,904,363.80
  4. Step 4: Simplify right side
    74,862,315.80x = 7,385,870,739,902,759
  5. Step 5: Solve for x
    x = 7,385,870,739,902,759/74,862,315.80
  6. Step 6: Final answer
    x = 98,659,394.40

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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.