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Finding the Fourth Proportional to 59,430, 82,013.40 and 35,557.68

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Solution

The fourth proportional to 59,430, 82,013.40 and 35,557.68 is: 49,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,430 : 82,013.40 = 35,557.68 : x
  2. Step 2: Convert to fraction form
    59,430/82,013.40 = 35,557.68/x
  3. Step 3: Cross multiply
    59,430x = 82,013.40 × 35,557.68
  4. Step 4: Simplify right side
    59,430x = 2,916,206,232.91
  5. Step 5: Solve for x
    x = 2,916,206,232.91/59,430
  6. Step 6: Final answer
    x = 49,069.60

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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.