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Finding the Fourth Proportional to 101,396.16, 139,892.04 and 61,094.76

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Solution

The fourth proportional to 101,396.16, 139,892.04 and 61,094.76 is: 84,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,396.16 : 139,892.04 = 61,094.76 : x
  2. Step 2: Convert to fraction form
    101,396.16/139,892.04 = 61,094.76/x
  3. Step 3: Cross multiply
    101,396.16x = 139,892.04 × 61,094.76
  4. Step 4: Simplify right side
    101,396.16x = 8,546,670,609.71
  5. Step 5: Solve for x
    x = 8,546,670,609.71/101,396.16
  6. Step 6: Final answer
    x = 84,289.88

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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.