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Finding the Fourth Proportional to 19,915.88, 29,878.68 and 6,064.88

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Solution

The fourth proportional to 19,915.88, 29,878.68 and 6,064.88 is: 9,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.88 : 29,878.68 = 6,064.88 : x
  2. Step 2: Convert to fraction form
    19,915.88/29,878.68 = 6,064.88/x
  3. Step 3: Cross multiply
    19,915.88x = 29,878.68 × 6,064.88
  4. Step 4: Simplify right side
    19,915.88x = 181,210,608.76
  5. Step 5: Solve for x
    x = 181,210,608.76/19,915.88
  6. Step 6: Final answer
    x = 9,098.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.