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Finding the Fourth Proportional to 57,478.01, 79,321.90 and 34,804.19

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Solution

The fourth proportional to 57,478.01, 79,321.90 and 34,804.19 is: 48,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,478.01 : 79,321.90 = 34,804.19 : x
  2. Step 2: Convert to fraction form
    57,478.01/79,321.90 = 34,804.19/x
  3. Step 3: Cross multiply
    57,478.01x = 79,321.90 × 34,804.19
  4. Step 4: Simplify right side
    57,478.01x = 2,760,734,478.76
  5. Step 5: Solve for x
    x = 2,760,734,478.76/57,478.01
  6. Step 6: Final answer
    x = 48,031.14

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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.