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Finding the Fourth Proportional to 185,356.79, 278,036.66 and 121,368.87

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Solution

The fourth proportional to 185,356.79, 278,036.66 and 121,368.87 is: 182,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,356.79 : 278,036.66 = 121,368.87 : x
  2. Step 2: Convert to fraction form
    185,356.79/278,036.66 = 121,368.87/x
  3. Step 3: Cross multiply
    185,356.79x = 278,036.66 × 121,368.87
  4. Step 4: Simplify right side
    185,356.79x = 33,744,995,091.06
  5. Step 5: Solve for x
    x = 33,744,995,091.06/185,356.79
  6. Step 6: Final answer
    x = 182,054.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.