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Finding the Fourth Proportional to 153,534.56, 211,878.11 and 89,016.30

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Solution

The fourth proportional to 153,534.56, 211,878.11 and 89,016.30 is: 122,842.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,534.56 : 211,878.11 = 89,016.30 : x
  2. Step 2: Convert to fraction form
    153,534.56/211,878.11 = 89,016.30/x
  3. Step 3: Cross multiply
    153,534.56x = 211,878.11 × 89,016.30
  4. Step 4: Simplify right side
    153,534.56x = 18,860,605,625.73
  5. Step 5: Solve for x
    x = 18,860,605,625.73/153,534.56
  6. Step 6: Final answer
    x = 122,842.74

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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.