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Finding the Fourth Proportional to 8,928.55, 12,322.16 and 4,950.91

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Solution

The fourth proportional to 8,928.55, 12,322.16 and 4,950.91 is: 6,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.55 : 12,322.16 = 4,950.91 : x
  2. Step 2: Convert to fraction form
    8,928.55/12,322.16 = 4,950.91/x
  3. Step 3: Cross multiply
    8,928.55x = 12,322.16 × 4,950.91
  4. Step 4: Simplify right side
    8,928.55x = 61,005,905.17
  5. Step 5: Solve for x
    x = 61,005,905.17/8,928.55
  6. Step 6: Final answer
    x = 6,832.68

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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.