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Finding the Fourth Proportional to 157,873.51, 217,858.98 and 86,256.01

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Solution

The fourth proportional to 157,873.51, 217,858.98 and 86,256.01 is: 119,029.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,873.51 : 217,858.98 = 86,256.01 : x
  2. Step 2: Convert to fraction form
    157,873.51/217,858.98 = 86,256.01/x
  3. Step 3: Cross multiply
    157,873.51x = 217,858.98 × 86,256.01
  4. Step 4: Simplify right side
    157,873.51x = 18,791,646,357.47
  5. Step 5: Solve for x
    x = 18,791,646,357.47/157,873.51
  6. Step 6: Final answer
    x = 119,029.76

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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.