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Finding the Fourth Proportional to 89,237.74, 133,813.90 and 51,808.16

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Solution

The fourth proportional to 89,237.74, 133,813.90 and 51,808.16 is: 77,687.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,237.74 : 133,813.90 = 51,808.16 : x
  2. Step 2: Convert to fraction form
    89,237.74/133,813.90 = 51,808.16/x
  3. Step 3: Cross multiply
    89,237.74x = 133,813.90 × 51,808.16
  4. Step 4: Simplify right side
    89,237.74x = 6,932,651,941.42
  5. Step 5: Solve for x
    x = 6,932,651,941.42/89,237.74
  6. Step 6: Final answer
    x = 77,687.44

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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.