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Finding the Fourth Proportional to 8,931.30, 12,325.17 and 4,952.31

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Solution

The fourth proportional to 8,931.30, 12,325.17 and 4,952.31 is: 6,834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.30 : 12,325.17 = 4,952.31 : x
  2. Step 2: Convert to fraction form
    8,931.30/12,325.17 = 4,952.31/x
  3. Step 3: Cross multiply
    8,931.30x = 12,325.17 × 4,952.31
  4. Step 4: Simplify right side
    8,931.30x = 61,038,081.21
  5. Step 5: Solve for x
    x = 61,038,081.21/8,931.30
  6. Step 6: Final answer
    x = 6,834.18

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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.