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Finding the Fourth Proportional to 7,762.41, 10,712.18 and 4,225.62

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Solution

The fourth proportional to 7,762.41, 10,712.18 and 4,225.62 is: 5,831.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.41 : 10,712.18 = 4,225.62 : x
  2. Step 2: Convert to fraction form
    7,762.41/10,712.18 = 4,225.62/x
  3. Step 3: Cross multiply
    7,762.41x = 10,712.18 × 4,225.62
  4. Step 4: Simplify right side
    7,762.41x = 45,265,580.92
  5. Step 5: Solve for x
    x = 45,265,580.92/7,762.41
  6. Step 6: Final answer
    x = 5,831.38

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Half scale
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Double scale
Find fourth proportional to 7,763.41, 10,713.56 and 4,226.62
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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.