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Finding the Fourth Proportional to 265,725,248.80, 398,650,858.80 and 136,352,826.40

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Solution

The fourth proportional to 265,725,248.80, 398,650,858.80 and 136,352,826.40 is: 204,561,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,725,248.80 : 398,650,858.80 = 136,352,826.40 : x
  2. Step 2: Convert to fraction form
    265,725,248.80/398,650,858.80 = 136,352,826.40/x
  3. Step 3: Cross multiply
    265,725,248.80x = 398,650,858.80 × 136,352,826.40
  4. Step 4: Simplify right side
    265,725,248.80x = 54,357,171,344,167,320
  5. Step 5: Solve for x
    x = 54,357,171,344,167,320/265,725,248.80
  6. Step 6: Final answer
    x = 204,561,559.69

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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.