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Finding the Fourth Proportional to 93,707.76, 129,303.96 and 55,974

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Solution

The fourth proportional to 93,707.76, 129,303.96 and 55,974 is: 77,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,707.76 : 129,303.96 = 55,974 : x
  2. Step 2: Convert to fraction form
    93,707.76/129,303.96 = 55,974/x
  3. Step 3: Cross multiply
    93,707.76x = 129,303.96 × 55,974
  4. Step 4: Simplify right side
    93,707.76x = 7,237,659,857.04
  5. Step 5: Solve for x
    x = 7,237,659,857.04/93,707.76
  6. Step 6: Final answer
    x = 77,236.50

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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.