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Finding the Fourth Proportional to 93,657.68, 140,274.48 and 72,448.64

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Solution

The fourth proportional to 93,657.68, 140,274.48 and 72,448.64 is: 108,508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,657.68 : 140,274.48 = 72,448.64 : x
  2. Step 2: Convert to fraction form
    93,657.68/140,274.48 = 72,448.64/x
  3. Step 3: Cross multiply
    93,657.68x = 140,274.48 × 72,448.64
  4. Step 4: Simplify right side
    93,657.68x = 10,162,695,302.71
  5. Step 5: Solve for x
    x = 10,162,695,302.71/93,657.68
  6. Step 6: Final answer
    x = 108,508.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.