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Finding the Fourth Proportional to 112,058.76, 154,640.64 and 61,757.76

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Solution

The fourth proportional to 112,058.76, 154,640.64 and 61,757.76 is: 85,225.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,058.76 : 154,640.64 = 61,757.76 : x
  2. Step 2: Convert to fraction form
    112,058.76/154,640.64 = 61,757.76/x
  3. Step 3: Cross multiply
    112,058.76x = 154,640.64 × 61,757.76
  4. Step 4: Simplify right side
    112,058.76x = 9,550,259,531.37
  5. Step 5: Solve for x
    x = 9,550,259,531.37/112,058.76
  6. Step 6: Final answer
    x = 85,225.46

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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.