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Finding the Fourth Proportional to 134,502.75, 185,631.62 and 86,894.60

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Solution

The fourth proportional to 134,502.75, 185,631.62 and 86,894.60 is: 119,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,502.75 : 185,631.62 = 86,894.60 : x
  2. Step 2: Convert to fraction form
    134,502.75/185,631.62 = 86,894.60/x
  3. Step 3: Cross multiply
    134,502.75x = 185,631.62 × 86,894.60
  4. Step 4: Simplify right side
    134,502.75x = 16,130,384,004.62
  5. Step 5: Solve for x
    x = 16,130,384,004.62/134,502.75
  6. Step 6: Final answer
    x = 119,926.05

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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.