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Finding the Fourth Proportional to 93,873.60, 129,542.28 and 51,431.76

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Solution

The fourth proportional to 93,873.60, 129,542.28 and 51,431.76 is: 70,974.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,873.60 : 129,542.28 = 51,431.76 : x
  2. Step 2: Convert to fraction form
    93,873.60/129,542.28 = 51,431.76/x
  3. Step 3: Cross multiply
    93,873.60x = 129,542.28 × 51,431.76
  4. Step 4: Simplify right side
    93,873.60x = 6,662,587,454.81
  5. Step 5: Solve for x
    x = 6,662,587,454.81/93,873.60
  6. Step 6: Final answer
    x = 70,974.03

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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.