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Finding the Fourth Proportional to 185,990.48, 256,723.08 and 126,409.04

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Solution

The fourth proportional to 185,990.48, 256,723.08 and 126,409.04 is: 174,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,990.48 : 256,723.08 = 126,409.04 : x
  2. Step 2: Convert to fraction form
    185,990.48/256,723.08 = 126,409.04/x
  3. Step 3: Cross multiply
    185,990.48x = 256,723.08 × 126,409.04
  4. Step 4: Simplify right side
    185,990.48x = 32,452,118,088.64
  5. Step 5: Solve for x
    x = 32,452,118,088.64/185,990.48
  6. Step 6: Final answer
    x = 174,482.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.