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Finding the Fourth Proportional to 111,998.19, 154,557.43 and 61,697.19

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Solution

The fourth proportional to 111,998.19, 154,557.43 and 61,697.19 is: 85,142.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.19 : 154,557.43 = 61,697.19 : x
  2. Step 2: Convert to fraction form
    111,998.19/154,557.43 = 61,697.19/x
  3. Step 3: Cross multiply
    111,998.19x = 154,557.43 × 61,697.19
  4. Step 4: Simplify right side
    111,998.19x = 9,535,759,897.02
  5. Step 5: Solve for x
    x = 9,535,759,897.02/111,998.19
  6. Step 6: Final answer
    x = 85,142.09

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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.