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Finding the Fourth Proportional to 72,798.62, 100,438.00 and 59,346.68

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Solution

The fourth proportional to 72,798.62, 100,438.00 and 59,346.68 is: 81,878.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.62 : 100,438.00 = 59,346.68 : x
  2. Step 2: Convert to fraction form
    72,798.62/100,438.00 = 59,346.68/x
  3. Step 3: Cross multiply
    72,798.62x = 100,438.00 × 59,346.68
  4. Step 4: Simplify right side
    72,798.62x = 5,960,661,195.28
  5. Step 5: Solve for x
    x = 5,960,661,195.28/72,798.62
  6. Step 6: Final answer
    x = 81,878.77

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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.