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Finding the Fourth Proportional to 315,761.60, 473,673.99 and 91,127.54

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Solution

The fourth proportional to 315,761.60, 473,673.99 and 91,127.54 is: 136,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,761.60 : 473,673.99 = 91,127.54 : x
  2. Step 2: Convert to fraction form
    315,761.60/473,673.99 = 91,127.54/x
  3. Step 3: Cross multiply
    315,761.60x = 473,673.99 × 91,127.54
  4. Step 4: Simplify right side
    315,761.60x = 43,164,746,996.60
  5. Step 5: Solve for x
    x = 43,164,746,996.60/315,761.60
  6. Step 6: Final answer
    x = 136,700.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.