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Finding the Fourth Proportional to 112,216.94, 154,859.91 and 61,915.94

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Solution

The fourth proportional to 112,216.94, 154,859.91 and 61,915.94 is: 85,444.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,216.94 : 154,859.91 = 61,915.94 : x
  2. Step 2: Convert to fraction form
    112,216.94/154,859.91 = 61,915.94/x
  3. Step 3: Cross multiply
    112,216.94x = 154,859.91 × 61,915.94
  4. Step 4: Simplify right side
    112,216.94x = 9,588,296,895.97
  5. Step 5: Solve for x
    x = 9,588,296,895.97/112,216.94
  6. Step 6: Final answer
    x = 85,444.29

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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.