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Finding the Fourth Proportional to 93,551.28, 128,933.76 and 70,836

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Solution

The fourth proportional to 93,551.28, 128,933.76 and 70,836 is: 97,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,551.28 : 128,933.76 = 70,836 : x
  2. Step 2: Convert to fraction form
    93,551.28/128,933.76 = 70,836/x
  3. Step 3: Cross multiply
    93,551.28x = 128,933.76 × 70,836
  4. Step 4: Simplify right side
    93,551.28x = 9,133,151,823.36
  5. Step 5: Solve for x
    x = 9,133,151,823.36/93,551.28
  6. Step 6: Final answer
    x = 97,627.22

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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.