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Finding the Fourth Proportional to 514,220.30, 771,330.45 and 248,499.80

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Solution

The fourth proportional to 514,220.30, 771,330.45 and 248,499.80 is: 372,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,220.30 : 771,330.45 = 248,499.80 : x
  2. Step 2: Convert to fraction form
    514,220.30/771,330.45 = 248,499.80/x
  3. Step 3: Cross multiply
    514,220.30x = 771,330.45 × 248,499.80
  4. Step 4: Simplify right side
    514,220.30x = 191,675,462,558.91
  5. Step 5: Solve for x
    x = 191,675,462,558.91/514,220.30
  6. Step 6: Final answer
    x = 372,749.70

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Double scale
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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.