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Finding the Fourth Proportional to 29,628.99, 40,886.57 and 16,885.16

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Solution

The fourth proportional to 29,628.99, 40,886.57 and 16,885.16 is: 23,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,628.99 : 40,886.57 = 16,885.16 : x
  2. Step 2: Convert to fraction form
    29,628.99/40,886.57 = 16,885.16/x
  3. Step 3: Cross multiply
    29,628.99x = 40,886.57 × 16,885.16
  4. Step 4: Simplify right side
    29,628.99x = 690,376,267.41
  5. Step 5: Solve for x
    x = 690,376,267.41/29,628.99
  6. Step 6: Final answer
    x = 23,300.70

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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.