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Finding the Fourth Proportional to 93,047.20, 139,570.80 and 48,687.55

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Solution

The fourth proportional to 93,047.20, 139,570.80 and 48,687.55 is: 73,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,047.20 : 139,570.80 = 48,687.55 : x
  2. Step 2: Convert to fraction form
    93,047.20/139,570.80 = 48,687.55/x
  3. Step 3: Cross multiply
    93,047.20x = 139,570.80 × 48,687.55
  4. Step 4: Simplify right side
    93,047.20x = 6,795,360,303.54
  5. Step 5: Solve for x
    x = 6,795,360,303.54/93,047.20
  6. Step 6: Final answer
    x = 73,031.33

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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.