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Finding the Fourth Proportional to 185,235.56, 255,531.12 and 117,137.78

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Solution

The fourth proportional to 185,235.56, 255,531.12 and 117,137.78 is: 161,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,235.56 : 255,531.12 = 117,137.78 : x
  2. Step 2: Convert to fraction form
    185,235.56/255,531.12 = 117,137.78/x
  3. Step 3: Cross multiply
    185,235.56x = 255,531.12 × 117,137.78
  4. Step 4: Simplify right side
    185,235.56x = 29,932,348,117.71
  5. Step 5: Solve for x
    x = 29,932,348,117.71/185,235.56
  6. Step 6: Final answer
    x = 161,590.72

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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.