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Finding the Fourth Proportional to 93,388.71, 128,876.26 and 50,947.25

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Solution

The fourth proportional to 93,388.71, 128,876.26 and 50,947.25 is: 70,307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,388.71 : 128,876.26 = 50,947.25 : x
  2. Step 2: Convert to fraction form
    93,388.71/128,876.26 = 50,947.25/x
  3. Step 3: Cross multiply
    93,388.71x = 128,876.26 × 50,947.25
  4. Step 4: Simplify right side
    93,388.71x = 6,565,891,037.29
  5. Step 5: Solve for x
    x = 6,565,891,037.29/93,388.71
  6. Step 6: Final answer
    x = 70,307.12

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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.