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Finding the Fourth Proportional to 316,718.55, 475,124.19 and 92,049.79

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Solution

The fourth proportional to 316,718.55, 475,124.19 and 92,049.79 is: 138,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,718.55 : 475,124.19 = 92,049.79 : x
  2. Step 2: Convert to fraction form
    316,718.55/475,124.19 = 92,049.79/x
  3. Step 3: Cross multiply
    316,718.55x = 475,124.19 × 92,049.79
  4. Step 4: Simplify right side
    316,718.55x = 43,735,081,913.42
  5. Step 5: Solve for x
    x = 43,735,081,913.42/316,718.55
  6. Step 6: Final answer
    x = 138,088.16

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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.