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Finding the Fourth Proportional to 10,598,974.80, 15,898,462.20 and 3,870,013.20

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Solution

The fourth proportional to 10,598,974.80, 15,898,462.20 and 3,870,013.20 is: 5,805,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,598,974.80 : 15,898,462.20 = 3,870,013.20 : x
  2. Step 2: Convert to fraction form
    10,598,974.80/15,898,462.20 = 3,870,013.20/x
  3. Step 3: Cross multiply
    10,598,974.80x = 15,898,462.20 × 3,870,013.20
  4. Step 4: Simplify right side
    10,598,974.80x = 61,527,258,573,701.04
  5. Step 5: Solve for x
    x = 61,527,258,573,701.04/10,598,974.80
  6. Step 6: Final answer
    x = 5,805,019.80

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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.