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Finding the Fourth Proportional to 35,970.89, 53,961.90 and 12,272.90

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Solution

The fourth proportional to 35,970.89, 53,961.90 and 12,272.90 is: 18,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,970.89 : 53,961.90 = 12,272.90 : x
  2. Step 2: Convert to fraction form
    35,970.89/53,961.90 = 12,272.90/x
  3. Step 3: Cross multiply
    35,970.89x = 53,961.90 × 12,272.90
  4. Step 4: Simplify right side
    35,970.89x = 662,268,941.15
  5. Step 5: Solve for x
    x = 662,268,941.15/35,970.89
  6. Step 6: Final answer
    x = 18,411.25

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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.