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Finding the Fourth Proportional to 169,213.78, 233,390.82 and 121,516.12

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Solution

The fourth proportional to 169,213.78, 233,390.82 and 121,516.12 is: 167,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,213.78 : 233,390.82 = 121,516.12 : x
  2. Step 2: Convert to fraction form
    169,213.78/233,390.82 = 121,516.12/x
  3. Step 3: Cross multiply
    169,213.78x = 233,390.82 × 121,516.12
  4. Step 4: Simplify right side
    169,213.78x = 28,360,746,890.02
  5. Step 5: Solve for x
    x = 28,360,746,890.02/169,213.78
  6. Step 6: Final answer
    x = 167,603.06

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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.