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Finding the Fourth Proportional to 819,915,029.70, 1,229,872,544.55 and 819,915,029.70

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Solution

The fourth proportional to 819,915,029.70, 1,229,872,544.55 and 819,915,029.70 is: 1,229,872,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,915,029.70 : 1,229,872,544.55 = 819,915,029.70 : x
  2. Step 2: Convert to fraction form
    819,915,029.70/1,229,872,544.55 = 819,915,029.70/x
  3. Step 3: Cross multiply
    819,915,029.70x = 1,229,872,544.55 × 819,915,029.70
  4. Step 4: Simplify right side
    819,915,029.70x = 1,008,390,983,891,927,808
  5. Step 5: Solve for x
    x = 1,008,390,983,891,927,808/819,915,029.70
  6. Step 6: Final answer
    x = 1,229,872,544.55

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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.