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Finding the Fourth Proportional to 185,543.84, 256,051.20 and 100,661.12

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Solution

The fourth proportional to 185,543.84, 256,051.20 and 100,661.12 is: 138,912.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,543.84 : 256,051.20 = 100,661.12 : x
  2. Step 2: Convert to fraction form
    185,543.84/256,051.20 = 100,661.12/x
  3. Step 3: Cross multiply
    185,543.84x = 256,051.20 × 100,661.12
  4. Step 4: Simplify right side
    185,543.84x = 25,774,400,569.34
  5. Step 5: Solve for x
    x = 25,774,400,569.34/185,543.84
  6. Step 6: Final answer
    x = 138,912.73

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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.