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Finding the Fourth Proportional to 45,791,857.20, 64,278,661.20 and 45,791,857.20

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Solution

The fourth proportional to 45,791,857.20, 64,278,661.20 and 45,791,857.20 is: 64,278,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,791,857.20 : 64,278,661.20 = 45,791,857.20 : x
  2. Step 2: Convert to fraction form
    45,791,857.20/64,278,661.20 = 45,791,857.20/x
  3. Step 3: Cross multiply
    45,791,857.20x = 64,278,661.20 × 45,791,857.20
  4. Step 4: Simplify right side
    45,791,857.20x = 2,943,439,274,677,581
  5. Step 5: Solve for x
    x = 2,943,439,274,677,581/45,791,857.20
  6. Step 6: Final answer
    x = 64,278,661.20

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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.