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Finding the Fourth Proportional to 111,369.13, 153,696.73 and 61,068.13

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Solution

The fourth proportional to 111,369.13, 153,696.73 and 61,068.13 is: 84,278.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,369.13 : 153,696.73 = 61,068.13 : x
  2. Step 2: Convert to fraction form
    111,369.13/153,696.73 = 61,068.13/x
  3. Step 3: Cross multiply
    111,369.13x = 153,696.73 × 61,068.13
  4. Step 4: Simplify right side
    111,369.13x = 9,385,971,888.21
  5. Step 5: Solve for x
    x = 9,385,971,888.21/111,369.13
  6. Step 6: Final answer
    x = 84,278.04

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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.