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Finding the Fourth Proportional to 655,927,407.38, 983,892,978.83 and 189,626,791.46

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Solution

The fourth proportional to 655,927,407.38, 983,892,978.83 and 189,626,791.46 is: 284,440,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,927,407.38 : 983,892,978.83 = 189,626,791.46 : x
  2. Step 2: Convert to fraction form
    655,927,407.38/983,892,978.83 = 189,626,791.46/x
  3. Step 3: Cross multiply
    655,927,407.38x = 983,892,978.83 × 189,626,791.46
  4. Step 4: Simplify right side
    655,927,407.38x = 186,572,468,711,109,216
  5. Step 5: Solve for x
    x = 186,572,468,711,109,216/655,927,407.38
  6. Step 6: Final answer
    x = 284,440,727.15

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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.