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Finding the Fourth Proportional to 112,051.64, 154,629.28 and 61,064.84

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Solution

The fourth proportional to 112,051.64, 154,629.28 and 61,064.84 is: 84,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,051.64 : 154,629.28 = 61,064.84 : x
  2. Step 2: Convert to fraction form
    112,051.64/154,629.28 = 61,064.84/x
  3. Step 3: Cross multiply
    112,051.64x = 154,629.28 × 61,064.84
  4. Step 4: Simplify right side
    112,051.64x = 9,442,412,242.52
  5. Step 5: Solve for x
    x = 9,442,412,242.52/112,051.64
  6. Step 6: Final answer
    x = 84,268.40

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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.