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Finding the Fourth Proportional to 112,066.56, 154,649.64 and 61,765.56

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Solution

The fourth proportional to 112,066.56, 154,649.64 and 61,765.56 is: 85,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,066.56 : 154,649.64 = 61,765.56 : x
  2. Step 2: Convert to fraction form
    112,066.56/154,649.64 = 61,765.56/x
  3. Step 3: Cross multiply
    112,066.56x = 154,649.64 × 61,765.56
  4. Step 4: Simplify right side
    112,066.56x = 9,552,021,618.40
  5. Step 5: Solve for x
    x = 9,552,021,618.40/112,066.56
  6. Step 6: Final answer
    x = 85,235.25

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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.