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Finding the Fourth Proportional to 59,415.40, 89,123.10 and 39,629.80

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Solution

The fourth proportional to 59,415.40, 89,123.10 and 39,629.80 is: 59,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,415.40 : 89,123.10 = 39,629.80 : x
  2. Step 2: Convert to fraction form
    59,415.40/89,123.10 = 39,629.80/x
  3. Step 3: Cross multiply
    59,415.40x = 89,123.10 × 39,629.80
  4. Step 4: Simplify right side
    59,415.40x = 3,531,930,628.38
  5. Step 5: Solve for x
    x = 3,531,930,628.38/59,415.40
  6. Step 6: Final answer
    x = 59,444.70

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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.