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Finding the Fourth Proportional to 224,858.72, 310,322.67 and 128,066.66

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Solution

The fourth proportional to 224,858.72, 310,322.67 and 128,066.66 is: 176,742.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,858.72 : 310,322.67 = 128,066.66 : x
  2. Step 2: Convert to fraction form
    224,858.72/310,322.67 = 128,066.66/x
  3. Step 3: Cross multiply
    224,858.72x = 310,322.67 × 128,066.66
  4. Step 4: Simplify right side
    224,858.72x = 39,741,987,869.18
  5. Step 5: Solve for x
    x = 39,741,987,869.18/224,858.72
  6. Step 6: Final answer
    x = 176,742.04

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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.