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Finding the Fourth Proportional to 111,247.44, 153,398.50 and 85,697.08

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Solution

The fourth proportional to 111,247.44, 153,398.50 and 85,697.08 is: 118,167.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,247.44 : 153,398.50 = 85,697.08 : x
  2. Step 2: Convert to fraction form
    111,247.44/153,398.50 = 85,697.08/x
  3. Step 3: Cross multiply
    111,247.44x = 153,398.50 × 85,697.08
  4. Step 4: Simplify right side
    111,247.44x = 13,145,803,526.38
  5. Step 5: Solve for x
    x = 13,145,803,526.38/111,247.44
  6. Step 6: Final answer
    x = 118,167.25

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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.