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Finding the Fourth Proportional to 55,280.94, 76,300 and 35,133.90

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Solution

The fourth proportional to 55,280.94, 76,300 and 35,133.90 is: 48,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,280.94 : 76,300 = 35,133.90 : x
  2. Step 2: Convert to fraction form
    55,280.94/76,300 = 35,133.90/x
  3. Step 3: Cross multiply
    55,280.94x = 76,300 × 35,133.90
  4. Step 4: Simplify right side
    55,280.94x = 2,680,716,570
  5. Step 5: Solve for x
    x = 2,680,716,570/55,280.94
  6. Step 6: Final answer
    x = 48,492.60

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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.