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Finding the Fourth Proportional to 228,200.90, 342,301.35 and 61,988.90

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Solution

The fourth proportional to 228,200.90, 342,301.35 and 61,988.90 is: 92,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,200.90 : 342,301.35 = 61,988.90 : x
  2. Step 2: Convert to fraction form
    228,200.90/342,301.35 = 61,988.90/x
  3. Step 3: Cross multiply
    228,200.90x = 342,301.35 × 61,988.90
  4. Step 4: Simplify right side
    228,200.90x = 21,218,884,155.02
  5. Step 5: Solve for x
    x = 21,218,884,155.02/228,200.90
  6. Step 6: Final answer
    x = 92,983.35

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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.