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Finding the Fourth Proportional to 15,005.88, 20,699.52 and 9,033.84

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Solution

The fourth proportional to 15,005.88, 20,699.52 and 9,033.84 is: 12,461.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.88 : 20,699.52 = 9,033.84 : x
  2. Step 2: Convert to fraction form
    15,005.88/20,699.52 = 9,033.84/x
  3. Step 3: Cross multiply
    15,005.88x = 20,699.52 × 9,033.84
  4. Step 4: Simplify right side
    15,005.88x = 186,996,151.76
  5. Step 5: Solve for x
    x = 186,996,151.76/15,005.88
  6. Step 6: Final answer
    x = 12,461.53

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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.