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Finding the Fourth Proportional to 93,564.99, 129,150.45 and 74,479.77

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Solution

The fourth proportional to 93,564.99, 129,150.45 and 74,479.77 is: 102,806.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,564.99 : 129,150.45 = 74,479.77 : x
  2. Step 2: Convert to fraction form
    93,564.99/129,150.45 = 74,479.77/x
  3. Step 3: Cross multiply
    93,564.99x = 129,150.45 × 74,479.77
  4. Step 4: Simplify right side
    93,564.99x = 9,619,095,811.40
  5. Step 5: Solve for x
    x = 9,619,095,811.40/93,564.99
  6. Step 6: Final answer
    x = 102,806.57

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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.