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Finding the Fourth Proportional to 93,271.68, 139,989.60 and 48,930.12

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Solution

The fourth proportional to 93,271.68, 139,989.60 and 48,930.12 is: 73,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,271.68 : 139,989.60 = 48,930.12 : x
  2. Step 2: Convert to fraction form
    93,271.68/139,989.60 = 48,930.12/x
  3. Step 3: Cross multiply
    93,271.68x = 139,989.60 × 48,930.12
  4. Step 4: Simplify right side
    93,271.68x = 6,849,707,926.75
  5. Step 5: Solve for x
    x = 6,849,707,926.75/93,271.68
  6. Step 6: Final answer
    x = 73,438.24

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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.