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Finding the Fourth Proportional to 519,881.10, 779,821.65 and 239,945.10

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Solution

The fourth proportional to 519,881.10, 779,821.65 and 239,945.10 is: 359,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,881.10 : 779,821.65 = 239,945.10 : x
  2. Step 2: Convert to fraction form
    519,881.10/779,821.65 = 239,945.10/x
  3. Step 3: Cross multiply
    519,881.10x = 779,821.65 × 239,945.10
  4. Step 4: Simplify right side
    519,881.10x = 187,114,383,791.42
  5. Step 5: Solve for x
    x = 187,114,383,791.42/519,881.10
  6. Step 6: Final answer
    x = 359,917.65

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Half scale
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Double scale
Find fourth proportional to 519,882.10, 779,823.15 and 239,946.10
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.