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Finding the Fourth Proportional to 19,607.67, 29,411.51 and 7,913.30

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Solution

The fourth proportional to 19,607.67, 29,411.51 and 7,913.30 is: 11,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,607.67 : 29,411.51 = 7,913.30 : x
  2. Step 2: Convert to fraction form
    19,607.67/29,411.51 = 7,913.30/x
  3. Step 3: Cross multiply
    19,607.67x = 29,411.51 × 7,913.30
  4. Step 4: Simplify right side
    19,607.67x = 232,741,915.46
  5. Step 5: Solve for x
    x = 232,741,915.46/19,607.67
  6. Step 6: Final answer
    x = 11,869.94

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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.