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Finding the Fourth Proportional to 14,771,978.53, 20,381,740.18 and 8,659,226.05

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Solution

The fourth proportional to 14,771,978.53, 20,381,740.18 and 8,659,226.05 is: 11,947,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,771,978.53 : 20,381,740.18 = 8,659,226.05 : x
  2. Step 2: Convert to fraction form
    14,771,978.53/20,381,740.18 = 8,659,226.05/x
  3. Step 3: Cross multiply
    14,771,978.53x = 20,381,740.18 × 8,659,226.05
  4. Step 4: Simplify right side
    14,771,978.53x = 176,490,095,438,385.25
  5. Step 5: Solve for x
    x = 176,490,095,438,385.25/14,771,978.53
  6. Step 6: Final answer
    x = 11,947,627.40

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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.