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Finding the Fourth Proportional to 253,038.96, 379,616.04 and 86,816.88

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Solution

The fourth proportional to 253,038.96, 379,616.04 and 86,816.88 is: 130,245.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,038.96 : 379,616.04 = 86,816.88 : x
  2. Step 2: Convert to fraction form
    253,038.96/379,616.04 = 86,816.88/x
  3. Step 3: Cross multiply
    253,038.96x = 379,616.04 × 86,816.88
  4. Step 4: Simplify right side
    253,038.96x = 32,957,080,190.76
  5. Step 5: Solve for x
    x = 32,957,080,190.76/253,038.96
  6. Step 6: Final answer
    x = 130,245.08

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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.