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Finding the Fourth Proportional to 7,477.92, 10,332.36 and 5,917.86

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Solution

The fourth proportional to 7,477.92, 10,332.36 and 5,917.86 is: 8,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.92 : 10,332.36 = 5,917.86 : x
  2. Step 2: Convert to fraction form
    7,477.92/10,332.36 = 5,917.86/x
  3. Step 3: Cross multiply
    7,477.92x = 10,332.36 × 5,917.86
  4. Step 4: Simplify right side
    7,477.92x = 61,145,459.95
  5. Step 5: Solve for x
    x = 61,145,459.95/7,477.92
  6. Step 6: Final answer
    x = 8,176.80

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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.