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Finding the Fourth Proportional to 8,465.76, 11,686.01 and 5,321.34

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Solution

The fourth proportional to 8,465.76, 11,686.01 and 5,321.34 is: 7,345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.76 : 11,686.01 = 5,321.34 : x
  2. Step 2: Convert to fraction form
    8,465.76/11,686.01 = 5,321.34/x
  3. Step 3: Cross multiply
    8,465.76x = 11,686.01 × 5,321.34
  4. Step 4: Simplify right side
    8,465.76x = 62,185,205.85
  5. Step 5: Solve for x
    x = 62,185,205.85/8,465.76
  6. Step 6: Final answer
    x = 7,345.50

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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.