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Finding the Fourth Proportional to 8,365.76, 12,557.72 and 6,291.68

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Solution

The fourth proportional to 8,365.76, 12,557.72 and 6,291.68 is: 9,444.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.76 : 12,557.72 = 6,291.68 : x
  2. Step 2: Convert to fraction form
    8,365.76/12,557.72 = 6,291.68/x
  3. Step 3: Cross multiply
    8,365.76x = 12,557.72 × 6,291.68
  4. Step 4: Simplify right side
    8,365.76x = 79,009,155.77
  5. Step 5: Solve for x
    x = 79,009,155.77/8,365.76
  6. Step 6: Final answer
    x = 9,444.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.