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Finding the Fourth Proportional to 57,781.99, 79,555.16 and 50,970.16

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Solution

The fourth proportional to 57,781.99, 79,555.16 and 50,970.16 is: 70,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,781.99 : 79,555.16 = 50,970.16 : x
  2. Step 2: Convert to fraction form
    57,781.99/79,555.16 = 50,970.16/x
  3. Step 3: Cross multiply
    57,781.99x = 79,555.16 × 50,970.16
  4. Step 4: Simplify right side
    57,781.99x = 4,054,938,780.29
  5. Step 5: Solve for x
    x = 4,054,938,780.29/57,781.99
  6. Step 6: Final answer
    x = 70,176.52

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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.