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Finding the Fourth Proportional to 187,685.92, 258,999.60 and 102,803.68

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Solution

The fourth proportional to 187,685.92, 258,999.60 and 102,803.68 is: 141,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,685.92 : 258,999.60 = 102,803.68 : x
  2. Step 2: Convert to fraction form
    187,685.92/258,999.60 = 102,803.68/x
  3. Step 3: Cross multiply
    187,685.92x = 258,999.60 × 102,803.68
  4. Step 4: Simplify right side
    187,685.92x = 26,626,111,998.53
  5. Step 5: Solve for x
    x = 26,626,111,998.53/187,685.92
  6. Step 6: Final answer
    x = 141,865.26

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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.