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Finding the Fourth Proportional to 15,466.50, 21,346.95 and 8,752.50

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Solution

The fourth proportional to 15,466.50, 21,346.95 and 8,752.50 is: 12,080.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,466.50 : 21,346.95 = 8,752.50 : x
  2. Step 2: Convert to fraction form
    15,466.50/21,346.95 = 8,752.50/x
  3. Step 3: Cross multiply
    15,466.50x = 21,346.95 × 8,752.50
  4. Step 4: Simplify right side
    15,466.50x = 186,839,179.88
  5. Step 5: Solve for x
    x = 186,839,179.88/15,466.50
  6. Step 6: Final answer
    x = 12,080.25

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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.