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Finding the Fourth Proportional to 353,717.92, 530,680.56 and 143,506.72

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Solution

The fourth proportional to 353,717.92, 530,680.56 and 143,506.72 is: 215,302.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,717.92 : 530,680.56 = 143,506.72 : x
  2. Step 2: Convert to fraction form
    353,717.92/530,680.56 = 143,506.72/x
  3. Step 3: Cross multiply
    353,717.92x = 530,680.56 × 143,506.72
  4. Step 4: Simplify right side
    353,717.92x = 76,156,226,533.36
  5. Step 5: Solve for x
    x = 76,156,226,533.36/353,717.92
  6. Step 6: Final answer
    x = 215,302.14

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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.