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Finding the Fourth Proportional to 351,998.10, 528,038.10 and 127,464.30

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Solution

The fourth proportional to 351,998.10, 528,038.10 and 127,464.30 is: 191,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,998.10 : 528,038.10 = 127,464.30 : x
  2. Step 2: Convert to fraction form
    351,998.10/528,038.10 = 127,464.30/x
  3. Step 3: Cross multiply
    351,998.10x = 528,038.10 × 127,464.30
  4. Step 4: Simplify right side
    351,998.10x = 67,306,006,789.83
  5. Step 5: Solve for x
    x = 67,306,006,789.83/351,998.10
  6. Step 6: Final answer
    x = 191,211.28

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1.5x scale

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.