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Finding the Fourth Proportional to 291,714.20, 437,538.90 and 239,031.80

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Solution

The fourth proportional to 291,714.20, 437,538.90 and 239,031.80 is: 358,521.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,714.20 : 437,538.90 = 239,031.80 : x
  2. Step 2: Convert to fraction form
    291,714.20/437,538.90 = 239,031.80/x
  3. Step 3: Cross multiply
    291,714.20x = 437,538.90 × 239,031.80
  4. Step 4: Simplify right side
    291,714.20x = 104,585,710,837.02
  5. Step 5: Solve for x
    x = 104,585,710,837.02/291,714.20
  6. Step 6: Final answer
    x = 358,521.15

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1.5x scale

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.