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Finding the Fourth Proportional to 35,773.47, 53,669.76 and 12,399.90

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Solution

The fourth proportional to 35,773.47, 53,669.76 and 12,399.90 is: 18,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,773.47 : 53,669.76 = 12,399.90 : x
  2. Step 2: Convert to fraction form
    35,773.47/53,669.76 = 12,399.90/x
  3. Step 3: Cross multiply
    35,773.47x = 53,669.76 × 12,399.90
  4. Step 4: Simplify right side
    35,773.47x = 665,499,657.02
  5. Step 5: Solve for x
    x = 665,499,657.02/35,773.47
  6. Step 6: Final answer
    x = 18,603.16

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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.