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Finding the Fourth Proportional to 459,297.96, 688,959.90 and 126,873.96

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Solution

The fourth proportional to 459,297.96, 688,959.90 and 126,873.96 is: 190,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,297.96 : 688,959.90 = 126,873.96 : x
  2. Step 2: Convert to fraction form
    459,297.96/688,959.90 = 126,873.96/x
  3. Step 3: Cross multiply
    459,297.96x = 688,959.90 × 126,873.96
  4. Step 4: Simplify right side
    459,297.96x = 87,411,070,794.20
  5. Step 5: Solve for x
    x = 87,411,070,794.20/459,297.96
  6. Step 6: Final answer
    x = 190,314.52

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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.