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Finding the Fourth Proportional to 111,870.33, 154,381.03 and 61,569.33

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Solution

The fourth proportional to 111,870.33, 154,381.03 and 61,569.33 is: 84,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,870.33 : 154,381.03 = 61,569.33 : x
  2. Step 2: Convert to fraction form
    111,870.33/154,381.03 = 61,569.33/x
  3. Step 3: Cross multiply
    111,870.33x = 154,381.03 × 61,569.33
  4. Step 4: Simplify right side
    111,870.33x = 9,505,136,581.81
  5. Step 5: Solve for x
    x = 9,505,136,581.81/111,870.33
  6. Step 6: Final answer
    x = 84,965.66

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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.