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Finding the Fourth Proportional to 93,879.50, 129,553.71 and 51,439.55

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Solution

The fourth proportional to 93,879.50, 129,553.71 and 51,439.55 is: 70,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,879.50 : 129,553.71 = 51,439.55 : x
  2. Step 2: Convert to fraction form
    93,879.50/129,553.71 = 51,439.55/x
  3. Step 3: Cross multiply
    93,879.50x = 129,553.71 × 51,439.55
  4. Step 4: Simplify right side
    93,879.50x = 6,664,184,543.23
  5. Step 5: Solve for x
    x = 6,664,184,543.23/93,879.50
  6. Step 6: Final answer
    x = 70,986.58

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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.