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Finding the Fourth Proportional to 285,343.47, 393,758.29 and 156,256.88

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Solution

The fourth proportional to 285,343.47, 393,758.29 and 156,256.88 is: 215,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,343.47 : 393,758.29 = 156,256.88 : x
  2. Step 2: Convert to fraction form
    285,343.47/393,758.29 = 156,256.88/x
  3. Step 3: Cross multiply
    285,343.47x = 393,758.29 × 156,256.88
  4. Step 4: Simplify right side
    285,343.47x = 61,527,443,532.65
  5. Step 5: Solve for x
    x = 61,527,443,532.65/285,343.47
  6. Step 6: Final answer
    x = 215,625.90

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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.