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Finding the Fourth Proportional to 8,470.62, 11,690.88 and 4,935.93

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Solution

The fourth proportional to 8,470.62, 11,690.88 and 4,935.93 is: 6,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.62 : 11,690.88 = 4,935.93 : x
  2. Step 2: Convert to fraction form
    8,470.62/11,690.88 = 4,935.93/x
  3. Step 3: Cross multiply
    8,470.62x = 11,690.88 × 4,935.93
  4. Step 4: Simplify right side
    8,470.62x = 57,705,365.32
  5. Step 5: Solve for x
    x = 57,705,365.32/8,470.62
  6. Step 6: Final answer
    x = 6,812.41

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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.