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Finding the Fourth Proportional to 489,991.32, 676,207.22 and 335,267.16

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Solution

The fourth proportional to 489,991.32, 676,207.22 and 335,267.16 is: 462,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,991.32 : 676,207.22 = 335,267.16 : x
  2. Step 2: Convert to fraction form
    489,991.32/676,207.22 = 335,267.16/x
  3. Step 3: Cross multiply
    489,991.32x = 676,207.22 × 335,267.16
  4. Step 4: Simplify right side
    489,991.32x = 226,710,074,220.90
  5. Step 5: Solve for x
    x = 226,710,074,220.90/489,991.32
  6. Step 6: Final answer
    x = 462,681.82

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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.