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Finding the Fourth Proportional to 42,803.80, 59,106.78 and 26,915.80

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Solution

The fourth proportional to 42,803.80, 59,106.78 and 26,915.80 is: 37,167.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,803.80 : 59,106.78 = 26,915.80 : x
  2. Step 2: Convert to fraction form
    42,803.80/59,106.78 = 26,915.80/x
  3. Step 3: Cross multiply
    42,803.80x = 59,106.78 × 26,915.80
  4. Step 4: Simplify right side
    42,803.80x = 1,590,906,269.12
  5. Step 5: Solve for x
    x = 1,590,906,269.12/42,803.80
  6. Step 6: Final answer
    x = 37,167.41

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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.