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Finding the Fourth Proportional to 93,416.52, 128,915.16 and 50,976

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Solution

The fourth proportional to 93,416.52, 128,915.16 and 50,976 is: 70,347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,416.52 : 128,915.16 = 50,976 : x
  2. Step 2: Convert to fraction form
    93,416.52/128,915.16 = 50,976/x
  3. Step 3: Cross multiply
    93,416.52x = 128,915.16 × 50,976
  4. Step 4: Simplify right side
    93,416.52x = 6,571,579,196.16
  5. Step 5: Solve for x
    x = 6,571,579,196.16/93,416.52
  6. Step 6: Final answer
    x = 70,347.08

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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.