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Finding the Fourth Proportional to 636,000.40, 952,618.20 and 386,246.80

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Solution

The fourth proportional to 636,000.40, 952,618.20 and 386,246.80 is: 578,530.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,000.40 : 952,618.20 = 386,246.80 : x
  2. Step 2: Convert to fraction form
    636,000.40/952,618.20 = 386,246.80/x
  3. Step 3: Cross multiply
    636,000.40x = 952,618.20 × 386,246.80
  4. Step 4: Simplify right side
    636,000.40x = 367,945,731,371.76
  5. Step 5: Solve for x
    x = 367,945,731,371.76/636,000.40
  6. Step 6: Final answer
    x = 578,530.66

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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.