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Finding the Fourth Proportional to 57,930,043.60, 81,328,809.20 and 57,930,043.60

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Solution

The fourth proportional to 57,930,043.60, 81,328,809.20 and 57,930,043.60 is: 81,328,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,930,043.60 : 81,328,809.20 = 57,930,043.60 : x
  2. Step 2: Convert to fraction form
    57,930,043.60/81,328,809.20 = 57,930,043.60/x
  3. Step 3: Cross multiply
    57,930,043.60x = 81,328,809.20 × 57,930,043.60
  4. Step 4: Simplify right side
    57,930,043.60x = 4,711,381,462,892,081
  5. Step 5: Solve for x
    x = 4,711,381,462,892,081/57,930,043.60
  6. Step 6: Final answer
    x = 81,328,809.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.