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Finding the Fourth Proportional to 755,757,982.80, 1,133,636,974.20 and 626,617,819.80

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Solution

The fourth proportional to 755,757,982.80, 1,133,636,974.20 and 626,617,819.80 is: 939,926,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,757,982.80 : 1,133,636,974.20 = 626,617,819.80 : x
  2. Step 2: Convert to fraction form
    755,757,982.80/1,133,636,974.20 = 626,617,819.80/x
  3. Step 3: Cross multiply
    755,757,982.80x = 1,133,636,974.20 × 626,617,819.80
  4. Step 4: Simplify right side
    755,757,982.80x = 710,357,129,217,872,768
  5. Step 5: Solve for x
    x = 710,357,129,217,872,768/755,757,982.80
  6. Step 6: Final answer
    x = 939,926,729.70

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1.5x scale

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.