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Finding the Fourth Proportional to 291,385.79, 402,130.96 and 176,675.41

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Solution

The fourth proportional to 291,385.79, 402,130.96 and 176,675.41 is: 243,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,385.79 : 402,130.96 = 176,675.41 : x
  2. Step 2: Convert to fraction form
    291,385.79/402,130.96 = 176,675.41/x
  3. Step 3: Cross multiply
    291,385.79x = 402,130.96 × 176,675.41
  4. Step 4: Simplify right side
    291,385.79x = 71,046,653,286.47
  5. Step 5: Solve for x
    x = 71,046,653,286.47/291,385.79
  6. Step 6: Final answer
    x = 243,823.33

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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.