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Finding the Fourth Proportional to 172,640.56, 238,266.68 and 97,203.76

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Solution

The fourth proportional to 172,640.56, 238,266.68 and 97,203.76 is: 134,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,640.56 : 238,266.68 = 97,203.76 : x
  2. Step 2: Convert to fraction form
    172,640.56/238,266.68 = 97,203.76/x
  3. Step 3: Cross multiply
    172,640.56x = 238,266.68 × 97,203.76
  4. Step 4: Simplify right side
    172,640.56x = 23,160,417,178.72
  5. Step 5: Solve for x
    x = 23,160,417,178.72/172,640.56
  6. Step 6: Final answer
    x = 134,153.97

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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.