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Finding the Fourth Proportional to 10,466.80, 15,695.40 and 4,620.40

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Solution

The fourth proportional to 10,466.80, 15,695.40 and 4,620.40 is: 6,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,466.80 : 15,695.40 = 4,620.40 : x
  2. Step 2: Convert to fraction form
    10,466.80/15,695.40 = 4,620.40/x
  3. Step 3: Cross multiply
    10,466.80x = 15,695.40 × 4,620.40
  4. Step 4: Simplify right side
    10,466.80x = 72,519,026.16
  5. Step 5: Solve for x
    x = 72,519,026.16/10,466.80
  6. Step 6: Final answer
    x = 6,928.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.