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Finding the Fourth Proportional to 99,631, 137,491.46 and 59,346.46

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Solution

The fourth proportional to 99,631, 137,491.46 and 59,346.46 is: 81,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,631 : 137,491.46 = 59,346.46 : x
  2. Step 2: Convert to fraction form
    99,631/137,491.46 = 59,346.46/x
  3. Step 3: Cross multiply
    99,631x = 137,491.46 × 59,346.46
  4. Step 4: Simplify right side
    99,631x = 8,159,631,431.23
  5. Step 5: Solve for x
    x = 8,159,631,431.23/99,631
  6. Step 6: Final answer
    x = 81,898.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.