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Finding the Fourth Proportional to 93,438.63, 128,944.71 and 53,152.47

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Solution

The fourth proportional to 93,438.63, 128,944.71 and 53,152.47 is: 73,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,438.63 : 128,944.71 = 53,152.47 : x
  2. Step 2: Convert to fraction form
    93,438.63/128,944.71 = 53,152.47/x
  3. Step 3: Cross multiply
    93,438.63x = 128,944.71 × 53,152.47
  4. Step 4: Simplify right side
    93,438.63x = 6,853,729,829.93
  5. Step 5: Solve for x
    x = 6,853,729,829.93/93,438.63
  6. Step 6: Final answer
    x = 73,350.07

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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.