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Finding the Fourth Proportional to 93,662.85, 129,254.69 and 51,221.40

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Solution

The fourth proportional to 93,662.85, 129,254.69 and 51,221.40 is: 70,685.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,662.85 : 129,254.69 = 51,221.40 : x
  2. Step 2: Convert to fraction form
    93,662.85/129,254.69 = 51,221.40/x
  3. Step 3: Cross multiply
    93,662.85x = 129,254.69 × 51,221.40
  4. Step 4: Simplify right side
    93,662.85x = 6,620,605,922.26
  5. Step 5: Solve for x
    x = 6,620,605,922.26/93,662.85
  6. Step 6: Final answer
    x = 70,685.51

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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.