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Finding the Fourth Proportional to 28,828.34, 39,783.06 and 16,253.10

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Solution

The fourth proportional to 28,828.34, 39,783.06 and 16,253.10 is: 22,429.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.34 : 39,783.06 = 16,253.10 : x
  2. Step 2: Convert to fraction form
    28,828.34/39,783.06 = 16,253.10/x
  3. Step 3: Cross multiply
    28,828.34x = 39,783.06 × 16,253.10
  4. Step 4: Simplify right side
    28,828.34x = 646,598,052.49
  5. Step 5: Solve for x
    x = 646,598,052.49/28,828.34
  6. Step 6: Final answer
    x = 22,429.25

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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.