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Finding the Fourth Proportional to 519,983.68, 779,971.84 and 146,007.04

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Solution

The fourth proportional to 519,983.68, 779,971.84 and 146,007.04 is: 219,009.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,983.68 : 779,971.84 = 146,007.04 : x
  2. Step 2: Convert to fraction form
    519,983.68/779,971.84 = 146,007.04/x
  3. Step 3: Cross multiply
    519,983.68x = 779,971.84 × 146,007.04
  4. Step 4: Simplify right side
    519,983.68x = 113,881,379,641.75
  5. Step 5: Solve for x
    x = 113,881,379,641.75/519,983.68
  6. Step 6: Final answer
    x = 219,009.53

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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.