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Finding the Fourth Proportional to 74,053.50, 102,193.83 and 40,519.50

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Solution

The fourth proportional to 74,053.50, 102,193.83 and 40,519.50 is: 55,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,053.50 : 102,193.83 = 40,519.50 : x
  2. Step 2: Convert to fraction form
    74,053.50/102,193.83 = 40,519.50/x
  3. Step 3: Cross multiply
    74,053.50x = 102,193.83 × 40,519.50
  4. Step 4: Simplify right side
    74,053.50x = 4,140,842,894.69
  5. Step 5: Solve for x
    x = 4,140,842,894.69/74,053.50
  6. Step 6: Final answer
    x = 55,916.91

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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.