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Finding the Fourth Proportional to 64,220.40, 96,208.20 and 34,628.40

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Solution

The fourth proportional to 64,220.40, 96,208.20 and 34,628.40 is: 51,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,220.40 : 96,208.20 = 34,628.40 : x
  2. Step 2: Convert to fraction form
    64,220.40/96,208.20 = 34,628.40/x
  3. Step 3: Cross multiply
    64,220.40x = 96,208.20 × 34,628.40
  4. Step 4: Simplify right side
    64,220.40x = 3,331,536,032.88
  5. Step 5: Solve for x
    x = 3,331,536,032.88/64,220.40
  6. Step 6: Final answer
    x = 51,876.60

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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.