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Finding the Fourth Proportional to 172,598.85, 238,129.25 and 100,928.16

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Solution

The fourth proportional to 172,598.85, 238,129.25 and 100,928.16 is: 139,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,598.85 : 238,129.25 = 100,928.16 : x
  2. Step 2: Convert to fraction form
    172,598.85/238,129.25 = 100,928.16/x
  3. Step 3: Cross multiply
    172,598.85x = 238,129.25 × 100,928.16
  4. Step 4: Simplify right side
    172,598.85x = 24,033,946,540.04
  5. Step 5: Solve for x
    x = 24,033,946,540.04/172,598.85
  6. Step 6: Final answer
    x = 139,247.43

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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.