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Finding the Fourth Proportional to 9,293.77, 12,824.95 and 5,315.32

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Solution

The fourth proportional to 9,293.77, 12,824.95 and 5,315.32 is: 7,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,293.77 : 12,824.95 = 5,315.32 : x
  2. Step 2: Convert to fraction form
    9,293.77/12,824.95 = 5,315.32/x
  3. Step 3: Cross multiply
    9,293.77x = 12,824.95 × 5,315.32
  4. Step 4: Simplify right side
    9,293.77x = 68,168,622.53
  5. Step 5: Solve for x
    x = 68,168,622.53/9,293.77
  6. Step 6: Final answer
    x = 7,334.88

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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.