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Finding the Fourth Proportional to 636,322, 954,488.76 and 193,090

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Solution

The fourth proportional to 636,322, 954,488.76 and 193,090 is: 289,636.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,322 : 954,488.76 = 193,090 : x
  2. Step 2: Convert to fraction form
    636,322/954,488.76 = 193,090/x
  3. Step 3: Cross multiply
    636,322x = 954,488.76 × 193,090
  4. Step 4: Simplify right side
    636,322x = 184,302,234,668.40
  5. Step 5: Solve for x
    x = 184,302,234,668.40/636,322
  6. Step 6: Final answer
    x = 289,636.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.