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Finding the Fourth Proportional to 93,615.76, 129,189.74 and 51,174.46

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Solution

The fourth proportional to 93,615.76, 129,189.74 and 51,174.46 is: 70,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,615.76 : 129,189.74 = 51,174.46 : x
  2. Step 2: Convert to fraction form
    93,615.76/129,189.74 = 51,174.46/x
  3. Step 3: Cross multiply
    93,615.76x = 129,189.74 × 51,174.46
  4. Step 4: Simplify right side
    93,615.76x = 6,611,215,182.04
  5. Step 5: Solve for x
    x = 6,611,215,182.04/93,615.76
  6. Step 6: Final answer
    x = 70,620.75

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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.