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Finding the Fourth Proportional to 121,298.92, 167,394.66 and 67,585

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Solution

The fourth proportional to 121,298.92, 167,394.66 and 67,585 is: 93,268.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,298.92 : 167,394.66 = 67,585 : x
  2. Step 2: Convert to fraction form
    121,298.92/167,394.66 = 67,585/x
  3. Step 3: Cross multiply
    121,298.92x = 167,394.66 × 67,585
  4. Step 4: Simplify right side
    121,298.92x = 11,313,368,096.10
  5. Step 5: Solve for x
    x = 11,313,368,096.10/121,298.92
  6. Step 6: Final answer
    x = 93,268.50

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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.