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Finding the Fourth Proportional to 316,240.67, 474,407.88 and 91,573.05

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Solution

The fourth proportional to 316,240.67, 474,407.88 and 91,573.05 is: 137,373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,240.67 : 474,407.88 = 91,573.05 : x
  2. Step 2: Convert to fraction form
    316,240.67/474,407.88 = 91,573.05/x
  3. Step 3: Cross multiply
    316,240.67x = 474,407.88 × 91,573.05
  4. Step 4: Simplify right side
    316,240.67x = 43,442,976,515.63
  5. Step 5: Solve for x
    x = 43,442,976,515.63/316,240.67
  6. Step 6: Final answer
    x = 137,373.15

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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.