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Finding the Fourth Proportional to 16,931.70, 25,409.70 and 9,528.30

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Solution

The fourth proportional to 16,931.70, 25,409.70 and 9,528.30 is: 14,299.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931.70 : 25,409.70 = 9,528.30 : x
  2. Step 2: Convert to fraction form
    16,931.70/25,409.70 = 9,528.30/x
  3. Step 3: Cross multiply
    16,931.70x = 25,409.70 × 9,528.30
  4. Step 4: Simplify right side
    16,931.70x = 242,111,244.51
  5. Step 5: Solve for x
    x = 242,111,244.51/16,931.70
  6. Step 6: Final answer
    x = 14,299.29

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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.