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Finding the Fourth Proportional to 9,280.70, 12,807.54 and 5,088.92

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Solution

The fourth proportional to 9,280.70, 12,807.54 and 5,088.92 is: 7,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,280.70 : 12,807.54 = 5,088.92 : x
  2. Step 2: Convert to fraction form
    9,280.70/12,807.54 = 5,088.92/x
  3. Step 3: Cross multiply
    9,280.70x = 12,807.54 × 5,088.92
  4. Step 4: Simplify right side
    9,280.70x = 65,176,546.46
  5. Step 5: Solve for x
    x = 65,176,546.46/9,280.70
  6. Step 6: Final answer
    x = 7,022.81

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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.