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Finding the Fourth Proportional to 29,658.42, 40,931.05 and 16,915.61

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Solution

The fourth proportional to 29,658.42, 40,931.05 and 16,915.61 is: 23,344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,658.42 : 40,931.05 = 16,915.61 : x
  2. Step 2: Convert to fraction form
    29,658.42/40,931.05 = 16,915.61/x
  3. Step 3: Cross multiply
    29,658.42x = 40,931.05 × 16,915.61
  4. Step 4: Simplify right side
    29,658.42x = 692,373,678.69
  5. Step 5: Solve for x
    x = 692,373,678.69/29,658.42
  6. Step 6: Final answer
    x = 23,344.93

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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.