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Finding the Fourth Proportional to 93,552, 129,206.40 and 72,585.60

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Solution

The fourth proportional to 93,552, 129,206.40 and 72,585.60 is: 100,249.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,552 : 129,206.40 = 72,585.60 : x
  2. Step 2: Convert to fraction form
    93,552/129,206.40 = 72,585.60/x
  3. Step 3: Cross multiply
    93,552x = 129,206.40 × 72,585.60
  4. Step 4: Simplify right side
    93,552x = 9,378,524,067.84
  5. Step 5: Solve for x
    x = 9,378,524,067.84/93,552
  6. Step 6: Final answer
    x = 100,249.32

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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.