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Finding the Fourth Proportional to 93,124.68, 128,514.78 and 50,685.96

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Solution

The fourth proportional to 93,124.68, 128,514.78 and 50,685.96 is: 69,948.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,124.68 : 128,514.78 = 50,685.96 : x
  2. Step 2: Convert to fraction form
    93,124.68/128,514.78 = 50,685.96/x
  3. Step 3: Cross multiply
    93,124.68x = 128,514.78 × 50,685.96
  4. Step 4: Simplify right side
    93,124.68x = 6,513,894,998.49
  5. Step 5: Solve for x
    x = 6,513,894,998.49/93,124.68
  6. Step 6: Final answer
    x = 69,948.11

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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.