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Finding the Fourth Proportional to 28,924.84, 39,915.84 and 16,178.32

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Solution

The fourth proportional to 28,924.84, 39,915.84 and 16,178.32 is: 22,325.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,924.84 : 39,915.84 = 16,178.32 : x
  2. Step 2: Convert to fraction form
    28,924.84/39,915.84 = 16,178.32/x
  3. Step 3: Cross multiply
    28,924.84x = 39,915.84 × 16,178.32
  4. Step 4: Simplify right side
    28,924.84x = 645,771,232.59
  5. Step 5: Solve for x
    x = 645,771,232.59/28,924.84
  6. Step 6: Final answer
    x = 22,325.84

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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.