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Finding the Fourth Proportional to 112,051.53, 154,631.14 and 61,064.28

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Solution

The fourth proportional to 112,051.53, 154,631.14 and 61,064.28 is: 84,268.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,051.53 : 154,631.14 = 61,064.28 : x
  2. Step 2: Convert to fraction form
    112,051.53/154,631.14 = 61,064.28/x
  3. Step 3: Cross multiply
    112,051.53x = 154,631.14 × 61,064.28
  4. Step 4: Simplify right side
    112,051.53x = 9,442,438,151.20
  5. Step 5: Solve for x
    x = 9,442,438,151.20/112,051.53
  6. Step 6: Final answer
    x = 84,268.71

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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.