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Finding the Fourth Proportional to 228,810.40, 343,280.40 and 71,054.80

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Solution

The fourth proportional to 228,810.40, 343,280.40 and 71,054.80 is: 106,602.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,810.40 : 343,280.40 = 71,054.80 : x
  2. Step 2: Convert to fraction form
    228,810.40/343,280.40 = 71,054.80/x
  3. Step 3: Cross multiply
    228,810.40x = 343,280.40 × 71,054.80
  4. Step 4: Simplify right side
    228,810.40x = 24,391,720,165.92
  5. Step 5: Solve for x
    x = 24,391,720,165.92/228,810.40
  6. Step 6: Final answer
    x = 106,602.32

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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.