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Finding the Fourth Proportional to 10,652,044.70, 15,978,067.05 and 8,880,574.70

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Solution

The fourth proportional to 10,652,044.70, 15,978,067.05 and 8,880,574.70 is: 13,320,862.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652,044.70 : 15,978,067.05 = 8,880,574.70 : x
  2. Step 2: Convert to fraction form
    10,652,044.70/15,978,067.05 = 8,880,574.70/x
  3. Step 3: Cross multiply
    10,652,044.70x = 15,978,067.05 × 8,880,574.70
  4. Step 4: Simplify right side
    10,652,044.70x = 141,894,417,999,133.62
  5. Step 5: Solve for x
    x = 141,894,417,999,133.62/10,652,044.70
  6. Step 6: Final answer
    x = 13,320,862.05

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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.