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Finding the Fourth Proportional to 83,915.77, 115,803.80 and 46,189.75

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Solution

The fourth proportional to 83,915.77, 115,803.80 and 46,189.75 is: 63,741.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,915.77 : 115,803.80 = 46,189.75 : x
  2. Step 2: Convert to fraction form
    83,915.77/115,803.80 = 46,189.75/x
  3. Step 3: Cross multiply
    83,915.77x = 115,803.80 × 46,189.75
  4. Step 4: Simplify right side
    83,915.77x = 5,348,948,340.10
  5. Step 5: Solve for x
    x = 5,348,948,340.10/83,915.77
  6. Step 6: Final answer
    x = 63,741.87

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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.