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Finding the Fourth Proportional to 18,387,809.60, 27,581,714.40 and 16,403,763.20

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Solution

The fourth proportional to 18,387,809.60, 27,581,714.40 and 16,403,763.20 is: 24,605,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387,809.60 : 27,581,714.40 = 16,403,763.20 : x
  2. Step 2: Convert to fraction form
    18,387,809.60/27,581,714.40 = 16,403,763.20/x
  3. Step 3: Cross multiply
    18,387,809.60x = 27,581,714.40 × 16,403,763.20
  4. Step 4: Simplify right side
    18,387,809.60x = 452,443,911,667,630.06
  5. Step 5: Solve for x
    x = 452,443,911,667,630.06/18,387,809.60
  6. Step 6: Final answer
    x = 24,605,644.80

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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.