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Finding the Fourth Proportional to 228,516.18, 315,454.17 and 151,038.49

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Solution

The fourth proportional to 228,516.18, 315,454.17 and 151,038.49 is: 208,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,516.18 : 315,454.17 = 151,038.49 : x
  2. Step 2: Convert to fraction form
    228,516.18/315,454.17 = 151,038.49/x
  3. Step 3: Cross multiply
    228,516.18x = 315,454.17 × 151,038.49
  4. Step 4: Simplify right side
    228,516.18x = 47,645,721,501.00
  5. Step 5: Solve for x
    x = 47,645,721,501.00/228,516.18
  6. Step 6: Final answer
    x = 208,500.43

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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.