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Finding the Fourth Proportional to 58,314.53, 80,400.49 and 38,139.46

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Solution

The fourth proportional to 58,314.53, 80,400.49 and 38,139.46 is: 52,584.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,314.53 : 80,400.49 = 38,139.46 : x
  2. Step 2: Convert to fraction form
    58,314.53/80,400.49 = 38,139.46/x
  3. Step 3: Cross multiply
    58,314.53x = 80,400.49 × 38,139.46
  4. Step 4: Simplify right side
    58,314.53x = 3,066,430,975.99
  5. Step 5: Solve for x
    x = 3,066,430,975.99/58,314.53
  6. Step 6: Final answer
    x = 52,584.34

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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.