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Finding the Fourth Proportional to 625,699,878.60, 864,182,467.86 and 412,073,488.56

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Solution

The fourth proportional to 625,699,878.60, 864,182,467.86 and 412,073,488.56 is: 569,133,376.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,699,878.60 : 864,182,467.86 = 412,073,488.56 : x
  2. Step 2: Convert to fraction form
    625,699,878.60/864,182,467.86 = 412,073,488.56/x
  3. Step 3: Cross multiply
    625,699,878.60x = 864,182,467.86 × 412,073,488.56
  4. Step 4: Simplify right side
    625,699,878.60x = 356,106,684,283,460,288
  5. Step 5: Solve for x
    x = 356,106,684,283,460,288/625,699,878.60
  6. Step 6: Final answer
    x = 569,133,376.02

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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.