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Finding the Fourth Proportional to 111,697, 154,142.10 and 61,396.36

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Solution

The fourth proportional to 111,697, 154,142.10 and 61,396.36 is: 84,727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,697 : 154,142.10 = 61,396.36 : x
  2. Step 2: Convert to fraction form
    111,697/154,142.10 = 61,396.36/x
  3. Step 3: Cross multiply
    111,697x = 154,142.10 × 61,396.36
  4. Step 4: Simplify right side
    111,697x = 9,463,763,862.76
  5. Step 5: Solve for x
    x = 9,463,763,862.76/111,697
  6. Step 6: Final answer
    x = 84,727.11

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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.