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Finding the Fourth Proportional to 8,931.60, 12,325.32 and 4,952.64

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Solution

The fourth proportional to 8,931.60, 12,325.32 and 4,952.64 is: 6,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.60 : 12,325.32 = 4,952.64 : x
  2. Step 2: Convert to fraction form
    8,931.60/12,325.32 = 4,952.64/x
  3. Step 3: Cross multiply
    8,931.60x = 12,325.32 × 4,952.64
  4. Step 4: Simplify right side
    8,931.60x = 61,042,872.84
  5. Step 5: Solve for x
    x = 61,042,872.84/8,931.60
  6. Step 6: Final answer
    x = 6,834.48

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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.