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Finding the Fourth Proportional to 305,193.52, 421,082.71 and 176,123.13

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Solution

The fourth proportional to 305,193.52, 421,082.71 and 176,123.13 is: 243,001.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,193.52 : 421,082.71 = 176,123.13 : x
  2. Step 2: Convert to fraction form
    305,193.52/421,082.71 = 176,123.13/x
  3. Step 3: Cross multiply
    305,193.52x = 421,082.71 × 176,123.13
  4. Step 4: Simplify right side
    305,193.52x = 74,162,404,874.08
  5. Step 5: Solve for x
    x = 74,162,404,874.08/305,193.52
  6. Step 6: Final answer
    x = 243,001.24

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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.