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Finding the Fourth Proportional to 9,915.15, 14,872.29 and 3,341.31

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Solution

The fourth proportional to 9,915.15, 14,872.29 and 3,341.31 is: 5,011.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.15 : 14,872.29 = 3,341.31 : x
  2. Step 2: Convert to fraction form
    9,915.15/14,872.29 = 3,341.31/x
  3. Step 3: Cross multiply
    9,915.15x = 14,872.29 × 3,341.31
  4. Step 4: Simplify right side
    9,915.15x = 49,692,881.79
  5. Step 5: Solve for x
    x = 49,692,881.79/9,915.15
  6. Step 6: Final answer
    x = 5,011.81

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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.