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Finding the Fourth Proportional to 4,870.60, 7,309.13 and 1,792.60

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Solution

The fourth proportional to 4,870.60, 7,309.13 and 1,792.60 is: 2,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.60 : 7,309.13 = 1,792.60 : x
  2. Step 2: Convert to fraction form
    4,870.60/7,309.13 = 1,792.60/x
  3. Step 3: Cross multiply
    4,870.60x = 7,309.13 × 1,792.60
  4. Step 4: Simplify right side
    4,870.60x = 13,102,332.65
  5. Step 5: Solve for x
    x = 13,102,332.65/4,870.60
  6. Step 6: Final answer
    x = 2,690.09

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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.