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Finding the Fourth Proportional to 10,866,872.40, 16,264,879.20 and 10,866,872.40

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Solution

The fourth proportional to 10,866,872.40, 16,264,879.20 and 10,866,872.40 is: 16,264,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,866,872.40 : 16,264,879.20 = 10,866,872.40 : x
  2. Step 2: Convert to fraction form
    10,866,872.40/16,264,879.20 = 10,866,872.40/x
  3. Step 3: Cross multiply
    10,866,872.40x = 16,264,879.20 × 10,866,872.40
  4. Step 4: Simplify right side
    10,866,872.40x = 176,748,366,867,814.06
  5. Step 5: Solve for x
    x = 176,748,366,867,814.06/10,866,872.40
  6. Step 6: Final answer
    x = 16,264,879.20

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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.