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Finding the Fourth Proportional to 93,300.12, 128,749.51 and 53,008.56

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Solution

The fourth proportional to 93,300.12, 128,749.51 and 53,008.56 is: 73,149.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,300.12 : 128,749.51 = 53,008.56 : x
  2. Step 2: Convert to fraction form
    93,300.12/128,749.51 = 53,008.56/x
  3. Step 3: Cross multiply
    93,300.12x = 128,749.51 × 53,008.56
  4. Step 4: Simplify right side
    93,300.12x = 6,824,826,125.81
  5. Step 5: Solve for x
    x = 6,824,826,125.81/93,300.12
  6. Step 6: Final answer
    x = 73,149.17

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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.