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Finding the Fourth Proportional to 187,681.92, 258,994.08 and 102,799.68

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Solution

The fourth proportional to 187,681.92, 258,994.08 and 102,799.68 is: 141,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,681.92 : 258,994.08 = 102,799.68 : x
  2. Step 2: Convert to fraction form
    187,681.92/258,994.08 = 102,799.68/x
  3. Step 3: Cross multiply
    187,681.92x = 258,994.08 × 102,799.68
  4. Step 4: Simplify right side
    187,681.92x = 26,624,508,545.89
  5. Step 5: Solve for x
    x = 26,624,508,545.89/187,681.92
  6. Step 6: Final answer
    x = 141,859.74

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1.5x scale

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.