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Finding the Fourth Proportional to 515,867.70, 773,801.55 and 141,890.70

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Solution

The fourth proportional to 515,867.70, 773,801.55 and 141,890.70 is: 212,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,867.70 : 773,801.55 = 141,890.70 : x
  2. Step 2: Convert to fraction form
    515,867.70/773,801.55 = 141,890.70/x
  3. Step 3: Cross multiply
    515,867.70x = 773,801.55 × 141,890.70
  4. Step 4: Simplify right side
    515,867.70x = 109,795,243,590.59
  5. Step 5: Solve for x
    x = 109,795,243,590.59/515,867.70
  6. Step 6: Final answer
    x = 212,836.05

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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.