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Finding the Fourth Proportional to 3,900,878.76, 5,849,862.96 and 1,341,369.72

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Solution

The fourth proportional to 3,900,878.76, 5,849,862.96 and 1,341,369.72 is: 2,011,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900,878.76 : 5,849,862.96 = 1,341,369.72 : x
  2. Step 2: Convert to fraction form
    3,900,878.76/5,849,862.96 = 1,341,369.72/x
  3. Step 3: Cross multiply
    3,900,878.76x = 5,849,862.96 × 1,341,369.72
  4. Step 4: Simplify right side
    3,900,878.76x = 7,846,829,040,693.57
  5. Step 5: Solve for x
    x = 7,846,829,040,693.57/3,900,878.76
  6. Step 6: Final answer
    x = 2,011,554.20

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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.