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Finding the Fourth Proportional to 7,831.99, 10,807.63 and 4,294.50

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Solution

The fourth proportional to 7,831.99, 10,807.63 and 4,294.50 is: 5,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.99 : 10,807.63 = 4,294.50 : x
  2. Step 2: Convert to fraction form
    7,831.99/10,807.63 = 4,294.50/x
  3. Step 3: Cross multiply
    7,831.99x = 10,807.63 × 4,294.50
  4. Step 4: Simplify right side
    7,831.99x = 46,413,367.04
  5. Step 5: Solve for x
    x = 46,413,367.04/7,831.99
  6. Step 6: Final answer
    x = 5,926.13

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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.