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Finding the Fourth Proportional to 93,139.91, 128,529.50 and 52,851.27

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Solution

The fourth proportional to 93,139.91, 128,529.50 and 52,851.27 is: 72,932.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,139.91 : 128,529.50 = 52,851.27 : x
  2. Step 2: Convert to fraction form
    93,139.91/128,529.50 = 52,851.27/x
  3. Step 3: Cross multiply
    93,139.91x = 128,529.50 × 52,851.27
  4. Step 4: Simplify right side
    93,139.91x = 6,792,947,307.47
  5. Step 5: Solve for x
    x = 6,792,947,307.47/93,139.91
  6. Step 6: Final answer
    x = 72,932.72

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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.