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Finding the Fourth Proportional to 35,431.72, 53,146.62 and 10,807.72

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Solution

The fourth proportional to 35,431.72, 53,146.62 and 10,807.72 is: 16,211.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,431.72 : 53,146.62 = 10,807.72 : x
  2. Step 2: Convert to fraction form
    35,431.72/53,146.62 = 10,807.72/x
  3. Step 3: Cross multiply
    35,431.72x = 53,146.62 × 10,807.72
  4. Step 4: Simplify right side
    35,431.72x = 574,393,787.91
  5. Step 5: Solve for x
    x = 574,393,787.91/35,431.72
  6. Step 6: Final answer
    x = 16,211.29

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1.5x scale

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.