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Finding the Fourth Proportional to 93,272.68, 139,991.10 and 48,931.12

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Solution

The fourth proportional to 93,272.68, 139,991.10 and 48,931.12 is: 73,439.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,272.68 : 139,991.10 = 48,931.12 : x
  2. Step 2: Convert to fraction form
    93,272.68/139,991.10 = 48,931.12/x
  3. Step 3: Cross multiply
    93,272.68x = 139,991.10 × 48,931.12
  4. Step 4: Simplify right side
    93,272.68x = 6,849,921,313.03
  5. Step 5: Solve for x
    x = 6,849,921,313.03/93,272.68
  6. Step 6: Final answer
    x = 73,439.74

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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.