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Finding the Fourth Proportional to 119,643.32, 179,295.66 and 66,358.76

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Solution

The fourth proportional to 119,643.32, 179,295.66 and 66,358.76 is: 99,444.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,643.32 : 179,295.66 = 66,358.76 : x
  2. Step 2: Convert to fraction form
    119,643.32/179,295.66 = 66,358.76/x
  3. Step 3: Cross multiply
    119,643.32x = 179,295.66 × 66,358.76
  4. Step 4: Simplify right side
    119,643.32x = 11,897,836,774.50
  5. Step 5: Solve for x
    x = 11,897,836,774.50/119,643.32
  6. Step 6: Final answer
    x = 99,444.22

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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.