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Finding the Fourth Proportional to 7,851.57, 10,835.05 and 4,314.71

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Solution

The fourth proportional to 7,851.57, 10,835.05 and 4,314.71 is: 5,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.57 : 10,835.05 = 4,314.71 : x
  2. Step 2: Convert to fraction form
    7,851.57/10,835.05 = 4,314.71/x
  3. Step 3: Cross multiply
    7,851.57x = 10,835.05 × 4,314.71
  4. Step 4: Simplify right side
    7,851.57x = 46,750,060.71
  5. Step 5: Solve for x
    x = 46,750,060.71/7,851.57
  6. Step 6: Final answer
    x = 5,954.23

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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.