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Finding the Fourth Proportional to 916,998,423.80, 1,375,497,635.70 and 590,481,073.40

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Solution

The fourth proportional to 916,998,423.80, 1,375,497,635.70 and 590,481,073.40 is: 885,721,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,998,423.80 : 1,375,497,635.70 = 590,481,073.40 : x
  2. Step 2: Convert to fraction form
    916,998,423.80/1,375,497,635.70 = 590,481,073.40/x
  3. Step 3: Cross multiply
    916,998,423.80x = 1,375,497,635.70 × 590,481,073.40
  4. Step 4: Simplify right side
    916,998,423.80x = 812,205,320,387,298,176
  5. Step 5: Solve for x
    x = 812,205,320,387,298,176/916,998,423.80
  6. Step 6: Final answer
    x = 885,721,610.10

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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.