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Finding the Fourth Proportional to 186,128.80, 256,788.08 and 109,601.12

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Solution

The fourth proportional to 186,128.80, 256,788.08 and 109,601.12 is: 151,208.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,128.80 : 256,788.08 = 109,601.12 : x
  2. Step 2: Convert to fraction form
    186,128.80/256,788.08 = 109,601.12/x
  3. Step 3: Cross multiply
    186,128.80x = 256,788.08 × 109,601.12
  4. Step 4: Simplify right side
    186,128.80x = 28,144,261,170.65
  5. Step 5: Solve for x
    x = 28,144,261,170.65/186,128.80
  6. Step 6: Final answer
    x = 151,208.52

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1.5x scale

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.