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Finding the Fourth Proportional to 725,793,805.30, 1,087,993,978.35 and 240,870,003.70

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Solution

The fourth proportional to 725,793,805.30, 1,087,993,978.35 and 240,870,003.70 is: 361,073,781.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,793,805.30 : 1,087,993,978.35 = 240,870,003.70 : x
  2. Step 2: Convert to fraction form
    725,793,805.30/1,087,993,978.35 = 240,870,003.70/x
  3. Step 3: Cross multiply
    725,793,805.30x = 1,087,993,978.35 × 240,870,003.70
  4. Step 4: Simplify right side
    725,793,805.30x = 262,065,113,590,742,176
  5. Step 5: Solve for x
    x = 262,065,113,590,742,176/725,793,805.30
  6. Step 6: Final answer
    x = 361,073,781.12

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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.