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Finding the Fourth Proportional to 316,029.16, 473,973.54 and 91,340.56

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Solution

The fourth proportional to 316,029.16, 473,973.54 and 91,340.56 is: 136,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,029.16 : 473,973.54 = 91,340.56 : x
  2. Step 2: Convert to fraction form
    316,029.16/473,973.54 = 91,340.56/x
  3. Step 3: Cross multiply
    316,029.16x = 473,973.54 × 91,340.56
  4. Step 4: Simplify right side
    316,029.16x = 43,293,008,568.78
  5. Step 5: Solve for x
    x = 43,293,008,568.78/316,029.16
  6. Step 6: Final answer
    x = 136,990.55

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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.