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Finding the Fourth Proportional to 159,716.79, 239,338.50 and 64,831.51

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Solution

The fourth proportional to 159,716.79, 239,338.50 and 64,831.51 is: 97,151.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,716.79 : 239,338.50 = 64,831.51 : x
  2. Step 2: Convert to fraction form
    159,716.79/239,338.50 = 64,831.51/x
  3. Step 3: Cross multiply
    159,716.79x = 239,338.50 × 64,831.51
  4. Step 4: Simplify right side
    159,716.79x = 15,516,676,412.19
  5. Step 5: Solve for x
    x = 15,516,676,412.19/159,716.79
  6. Step 6: Final answer
    x = 97,151.19

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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.