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Finding the Fourth Proportional to 207,716.61, 286,648.56 and 112,223.01

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Solution

The fourth proportional to 207,716.61, 286,648.56 and 112,223.01 is: 154,867.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,716.61 : 286,648.56 = 112,223.01 : x
  2. Step 2: Convert to fraction form
    207,716.61/286,648.56 = 112,223.01/x
  3. Step 3: Cross multiply
    207,716.61x = 286,648.56 × 112,223.01
  4. Step 4: Simplify right side
    207,716.61x = 32,168,564,215.37
  5. Step 5: Solve for x
    x = 32,168,564,215.37/207,716.61
  6. Step 6: Final answer
    x = 154,867.56

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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.