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Finding the Fourth Proportional to 48,496.99, 72,745.58 and 13,436.74

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Solution

The fourth proportional to 48,496.99, 72,745.58 and 13,436.74 is: 20,155.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,496.99 : 72,745.58 = 13,436.74 : x
  2. Step 2: Convert to fraction form
    48,496.99/72,745.58 = 13,436.74/x
  3. Step 3: Cross multiply
    48,496.99x = 72,745.58 × 13,436.74
  4. Step 4: Simplify right side
    48,496.99x = 977,463,444.61
  5. Step 5: Solve for x
    x = 977,463,444.61/48,496.99
  6. Step 6: Final answer
    x = 20,155.14

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Why These Related Problems?

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