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Finding the Fourth Proportional to 189,302.92, 261,211.17 and 117,656.80

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Solution

The fourth proportional to 189,302.92, 261,211.17 and 117,656.80 is: 162,349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,302.92 : 261,211.17 = 117,656.80 : x
  2. Step 2: Convert to fraction form
    189,302.92/261,211.17 = 117,656.80/x
  3. Step 3: Cross multiply
    189,302.92x = 261,211.17 × 117,656.80
  4. Step 4: Simplify right side
    189,302.92x = 30,733,270,386.46
  5. Step 5: Solve for x
    x = 30,733,270,386.46/189,302.92
  6. Step 6: Final answer
    x = 162,349.69

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1.5x scale

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.