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Finding the Fourth Proportional to 93,659.69, 129,253.93 and 53,379.81

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Solution

The fourth proportional to 93,659.69, 129,253.93 and 53,379.81 is: 73,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,659.69 : 129,253.93 = 53,379.81 : x
  2. Step 2: Convert to fraction form
    93,659.69/129,253.93 = 53,379.81/x
  3. Step 3: Cross multiply
    93,659.69x = 129,253.93 × 53,379.81
  4. Step 4: Simplify right side
    93,659.69x = 6,899,550,091.70
  5. Step 5: Solve for x
    x = 6,899,550,091.70/93,659.69
  6. Step 6: Final answer
    x = 73,666.16

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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.