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Finding the Fourth Proportional to 71,915.06, 107,825.88 and 29,783.72

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Solution

The fourth proportional to 71,915.06, 107,825.88 and 29,783.72 is: 44,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,915.06 : 107,825.88 = 29,783.72 : x
  2. Step 2: Convert to fraction form
    71,915.06/107,825.88 = 29,783.72/x
  3. Step 3: Cross multiply
    71,915.06x = 107,825.88 × 29,783.72
  4. Step 4: Simplify right side
    71,915.06x = 3,211,455,818.67
  5. Step 5: Solve for x
    x = 3,211,455,818.67/71,915.06
  6. Step 6: Final answer
    x = 44,656.23

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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.