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Finding the Fourth Proportional to 865,634.75, 1,304,360.70 and 711,320.03

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Solution

The fourth proportional to 865,634.75, 1,304,360.70 and 711,320.03 is: 1,071,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,634.75 : 1,304,360.70 = 711,320.03 : x
  2. Step 2: Convert to fraction form
    865,634.75/1,304,360.70 = 711,320.03/x
  3. Step 3: Cross multiply
    865,634.75x = 1,304,360.70 × 711,320.03
  4. Step 4: Simplify right side
    865,634.75x = 927,817,892,254.82
  5. Step 5: Solve for x
    x = 927,817,892,254.82/865,634.75
  6. Step 6: Final answer
    x = 1,071,835.31

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.