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Finding the Fourth Proportional to 619,648.20, 929,453.10 and 176,416.20

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Solution

The fourth proportional to 619,648.20, 929,453.10 and 176,416.20 is: 264,618.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,648.20 : 929,453.10 = 176,416.20 : x
  2. Step 2: Convert to fraction form
    619,648.20/929,453.10 = 176,416.20/x
  3. Step 3: Cross multiply
    619,648.20x = 929,453.10 × 176,416.20
  4. Step 4: Simplify right side
    619,648.20x = 163,970,583,980.22
  5. Step 5: Solve for x
    x = 163,970,583,980.22/619,648.20
  6. Step 6: Final answer
    x = 264,618.83

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Double scale
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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.