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Finding the Fourth Proportional to 28,805.40, 39,750.07 and 16,059.98

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Solution

The fourth proportional to 28,805.40, 39,750.07 and 16,059.98 is: 22,162.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805.40 : 39,750.07 = 16,059.98 : x
  2. Step 2: Convert to fraction form
    28,805.40/39,750.07 = 16,059.98/x
  3. Step 3: Cross multiply
    28,805.40x = 39,750.07 × 16,059.98
  4. Step 4: Simplify right side
    28,805.40x = 638,385,329.20
  5. Step 5: Solve for x
    x = 638,385,329.20/28,805.40
  6. Step 6: Final answer
    x = 22,162.00

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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.