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Finding the Fourth Proportional to 885,866,666.88, 1,222,318,699.20 and 494,665,898.88

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Solution

The fourth proportional to 885,866,666.88, 1,222,318,699.20 and 494,665,898.88 is: 682,539,935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,866,666.88 : 1,222,318,699.20 = 494,665,898.88 : x
  2. Step 2: Convert to fraction form
    885,866,666.88/1,222,318,699.20 = 494,665,898.88/x
  3. Step 3: Cross multiply
    885,866,666.88x = 1,222,318,699.20 × 494,665,898.88
  4. Step 4: Simplify right side
    885,866,666.88x = 604,639,378,057,600,384
  5. Step 5: Solve for x
    x = 604,639,378,057,600,384/885,866,666.88
  6. Step 6: Final answer
    x = 682,539,935.93

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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.