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Finding the Fourth Proportional to 667,057,710.70, 920,002,885.68 and 586,417,281.04

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Solution

The fourth proportional to 667,057,710.70, 920,002,885.68 and 586,417,281.04 is: 808,783,980.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,057,710.70 : 920,002,885.68 = 586,417,281.04 : x
  2. Step 2: Convert to fraction form
    667,057,710.70/920,002,885.68 = 586,417,281.04/x
  3. Step 3: Cross multiply
    667,057,710.70x = 920,002,885.68 × 586,417,281.04
  4. Step 4: Simplify right side
    667,057,710.70x = 539,505,590,769,419,456
  5. Step 5: Solve for x
    x = 539,505,590,769,419,456/667,057,710.70
  6. Step 6: Final answer
    x = 808,783,980.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.