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Finding the Fourth Proportional to 141,663.87, 195,496.61 and 77,133.87

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Solution

The fourth proportional to 141,663.87, 195,496.61 and 77,133.87 is: 106,444.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,663.87 : 195,496.61 = 77,133.87 : x
  2. Step 2: Convert to fraction form
    141,663.87/195,496.61 = 77,133.87/x
  3. Step 3: Cross multiply
    141,663.87x = 195,496.61 × 77,133.87
  4. Step 4: Simplify right side
    141,663.87x = 15,079,409,715.51
  5. Step 5: Solve for x
    x = 15,079,409,715.51/141,663.87
  6. Step 6: Final answer
    x = 106,444.99

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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.