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Finding the Fourth Proportional to 519,967.68, 779,947.92 and 145,991.04

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Solution

The fourth proportional to 519,967.68, 779,947.92 and 145,991.04 is: 218,985.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,967.68 : 779,947.92 = 145,991.04 : x
  2. Step 2: Convert to fraction form
    519,967.68/779,947.92 = 145,991.04/x
  3. Step 3: Cross multiply
    519,967.68x = 779,947.92 × 145,991.04
  4. Step 4: Simplify right side
    519,967.68x = 113,865,407,986.64
  5. Step 5: Solve for x
    x = 113,865,407,986.64/519,967.68
  6. Step 6: Final answer
    x = 218,985.55

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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.