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Finding the Fourth Proportional to 93,856.50, 129,501.81 and 55,628.01

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Solution

The fourth proportional to 93,856.50, 129,501.81 and 55,628.01 is: 76,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,856.50 : 129,501.81 = 55,628.01 : x
  2. Step 2: Convert to fraction form
    93,856.50/129,501.81 = 55,628.01/x
  3. Step 3: Cross multiply
    93,856.50x = 129,501.81 × 55,628.01
  4. Step 4: Simplify right side
    93,856.50x = 7,203,927,981.70
  5. Step 5: Solve for x
    x = 7,203,927,981.70/93,856.50
  6. Step 6: Final answer
    x = 76,754.71

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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.