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Finding the Fourth Proportional to 607,221.90, 910,832.85 and 186,518.70

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Solution

The fourth proportional to 607,221.90, 910,832.85 and 186,518.70 is: 279,778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,221.90 : 910,832.85 = 186,518.70 : x
  2. Step 2: Convert to fraction form
    607,221.90/910,832.85 = 186,518.70/x
  3. Step 3: Cross multiply
    607,221.90x = 910,832.85 × 186,518.70
  4. Step 4: Simplify right side
    607,221.90x = 169,887,359,099.30
  5. Step 5: Solve for x
    x = 169,887,359,099.30/607,221.90
  6. Step 6: Final answer
    x = 279,778.05

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Similar ratio
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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.