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Finding the Fourth Proportional to 516,010.30, 774,015.45 and 136,930.30

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Solution

The fourth proportional to 516,010.30, 774,015.45 and 136,930.30 is: 205,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,010.30 : 774,015.45 = 136,930.30 : x
  2. Step 2: Convert to fraction form
    516,010.30/774,015.45 = 136,930.30/x
  3. Step 3: Cross multiply
    516,010.30x = 774,015.45 × 136,930.30
  4. Step 4: Simplify right side
    516,010.30x = 105,986,167,773.14
  5. Step 5: Solve for x
    x = 105,986,167,773.14/516,010.30
  6. Step 6: Final answer
    x = 205,395.45

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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.