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Finding the Fourth Proportional to 111,574.19, 153,971.90 and 60,586.51

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Solution

The fourth proportional to 111,574.19, 153,971.90 and 60,586.51 is: 83,609.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,574.19 : 153,971.90 = 60,586.51 : x
  2. Step 2: Convert to fraction form
    111,574.19/153,971.90 = 60,586.51/x
  3. Step 3: Cross multiply
    111,574.19x = 153,971.90 × 60,586.51
  4. Step 4: Simplify right side
    111,574.19x = 9,328,620,175.80
  5. Step 5: Solve for x
    x = 9,328,620,175.80/111,574.19
  6. Step 6: Final answer
    x = 83,609.12

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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.