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Finding the Fourth Proportional to 916,463.16, 1,375,700.22 and 728,133.84

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Solution

The fourth proportional to 916,463.16, 1,375,700.22 and 728,133.84 is: 1,092,999.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,463.16 : 1,375,700.22 = 728,133.84 : x
  2. Step 2: Convert to fraction form
    916,463.16/1,375,700.22 = 728,133.84/x
  3. Step 3: Cross multiply
    916,463.16x = 1,375,700.22 × 728,133.84
  4. Step 4: Simplify right side
    916,463.16x = 1,001,693,883,877.44
  5. Step 5: Solve for x
    x = 1,001,693,883,877.44/916,463.16
  6. Step 6: Final answer
    x = 1,092,999.62

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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.