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Finding the Fourth Proportional to 14,762,612.88, 20,371,943.88 and 8,655,109.20

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Solution

The fourth proportional to 14,762,612.88, 20,371,943.88 and 8,655,109.20 is: 11,943,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,762,612.88 : 20,371,943.88 = 8,655,109.20 : x
  2. Step 2: Convert to fraction form
    14,762,612.88/20,371,943.88 = 8,655,109.20/x
  3. Step 3: Cross multiply
    14,762,612.88x = 20,371,943.88 × 8,655,109.20
  4. Step 4: Simplify right side
    14,762,612.88x = 176,321,398,897,671.66
  5. Step 5: Solve for x
    x = 176,321,398,897,671.66/14,762,612.88
  6. Step 6: Final answer
    x = 11,943,779.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.