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Finding the Fourth Proportional to 50,698.96, 69,965.76 and 28,038.36

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Solution

The fourth proportional to 50,698.96, 69,965.76 and 28,038.36 is: 38,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,698.96 : 69,965.76 = 28,038.36 : x
  2. Step 2: Convert to fraction form
    50,698.96/69,965.76 = 28,038.36/x
  3. Step 3: Cross multiply
    50,698.96x = 69,965.76 × 28,038.36
  4. Step 4: Simplify right side
    50,698.96x = 1,961,725,166.55
  5. Step 5: Solve for x
    x = 1,961,725,166.55/50,698.96
  6. Step 6: Final answer
    x = 38,693.60

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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.