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Finding the Fourth Proportional to 515,633.65, 711,569.04 and 286,192.91

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Solution

The fourth proportional to 515,633.65, 711,569.04 and 286,192.91 is: 394,943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,633.65 : 711,569.04 = 286,192.91 : x
  2. Step 2: Convert to fraction form
    515,633.65/711,569.04 = 286,192.91/x
  3. Step 3: Cross multiply
    515,633.65x = 711,569.04 × 286,192.91
  4. Step 4: Simplify right side
    515,633.65x = 203,646,014,929.21
  5. Step 5: Solve for x
    x = 203,646,014,929.21/515,633.65
  6. Step 6: Final answer
    x = 394,943.22

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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.