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Finding the Fourth Proportional to 93,831, 129,454.62 and 53,515.76

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Solution

The fourth proportional to 93,831, 129,454.62 and 53,515.76 is: 73,833.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,831 : 129,454.62 = 53,515.76 : x
  2. Step 2: Convert to fraction form
    93,831/129,454.62 = 53,515.76/x
  3. Step 3: Cross multiply
    93,831x = 129,454.62 × 53,515.76
  4. Step 4: Simplify right side
    93,831x = 6,927,862,374.81
  5. Step 5: Solve for x
    x = 6,927,862,374.81/93,831
  6. Step 6: Final answer
    x = 73,833.41

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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.