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Finding the Fourth Proportional to 6,158,689.20, 9,238,033.80 and 1,670,965.20

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Solution

The fourth proportional to 6,158,689.20, 9,238,033.80 and 1,670,965.20 is: 2,506,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,158,689.20 : 9,238,033.80 = 1,670,965.20 : x
  2. Step 2: Convert to fraction form
    6,158,689.20/9,238,033.80 = 1,670,965.20/x
  3. Step 3: Cross multiply
    6,158,689.20x = 9,238,033.80 × 1,670,965.20
  4. Step 4: Simplify right side
    6,158,689.20x = 15,436,432,996,223.76
  5. Step 5: Solve for x
    x = 15,436,432,996,223.76/6,158,689.20
  6. Step 6: Final answer
    x = 2,506,447.80

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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.