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Finding the Fourth Proportional to 521,693.81, 719,936.91 and 292,252.71

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Solution

The fourth proportional to 521,693.81, 719,936.91 and 292,252.71 is: 403,308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,693.81 : 719,936.91 = 292,252.71 : x
  2. Step 2: Convert to fraction form
    521,693.81/719,936.91 = 292,252.71/x
  3. Step 3: Cross multiply
    521,693.81x = 719,936.91 × 292,252.71
  4. Step 4: Simplify right side
    521,693.81x = 210,403,507,915.58
  5. Step 5: Solve for x
    x = 210,403,507,915.58/521,693.81
  6. Step 6: Final answer
    x = 403,308.43

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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.