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Finding the Fourth Proportional to 183,959.72, 253,864.02 and 103,390.52

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Solution

The fourth proportional to 183,959.72, 253,864.02 and 103,390.52 is: 142,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,959.72 : 253,864.02 = 103,390.52 : x
  2. Step 2: Convert to fraction form
    183,959.72/253,864.02 = 103,390.52/x
  3. Step 3: Cross multiply
    183,959.72x = 253,864.02 × 103,390.52
  4. Step 4: Simplify right side
    183,959.72x = 26,247,133,037.09
  5. Step 5: Solve for x
    x = 26,247,133,037.09/183,959.72
  6. Step 6: Final answer
    x = 142,678.70

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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.