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Finding the Fourth Proportional to 93,385.30, 128,871.45 and 50,943.53

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Solution

The fourth proportional to 93,385.30, 128,871.45 and 50,943.53 is: 70,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,385.30 : 128,871.45 = 50,943.53 : x
  2. Step 2: Convert to fraction form
    93,385.30/128,871.45 = 50,943.53/x
  3. Step 3: Cross multiply
    93,385.30x = 128,871.45 × 50,943.53
  4. Step 4: Simplify right side
    93,385.30x = 6,565,166,579.22
  5. Step 5: Solve for x
    x = 6,565,166,579.22/93,385.30
  6. Step 6: Final answer
    x = 70,301.93

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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.