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Finding the Fourth Proportional to 185,503.77, 255,988.35 and 100,619.01

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Solution

The fourth proportional to 185,503.77, 255,988.35 and 100,619.01 is: 138,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,503.77 : 255,988.35 = 100,619.01 : x
  2. Step 2: Convert to fraction form
    185,503.77/255,988.35 = 100,619.01/x
  3. Step 3: Cross multiply
    185,503.77x = 255,988.35 × 100,619.01
  4. Step 4: Simplify right side
    185,503.77x = 25,757,294,348.53
  5. Step 5: Solve for x
    x = 25,757,294,348.53/185,503.77
  6. Step 6: Final answer
    x = 138,850.52

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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.