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Finding the Fourth Proportional to 55,795.70, 83,693.55 and 18,859.70

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Solution

The fourth proportional to 55,795.70, 83,693.55 and 18,859.70 is: 28,289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,795.70 : 83,693.55 = 18,859.70 : x
  2. Step 2: Convert to fraction form
    55,795.70/83,693.55 = 18,859.70/x
  3. Step 3: Cross multiply
    55,795.70x = 83,693.55 × 18,859.70
  4. Step 4: Simplify right side
    55,795.70x = 1,578,435,244.94
  5. Step 5: Solve for x
    x = 1,578,435,244.94/55,795.70
  6. Step 6: Final answer
    x = 28,289.55

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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.