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Finding the Fourth Proportional to 368,723.91, 553,085.88 and 210,841.68

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Solution

The fourth proportional to 368,723.91, 553,085.88 and 210,841.68 is: 316,262.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,723.91 : 553,085.88 = 210,841.68 : x
  2. Step 2: Convert to fraction form
    368,723.91/553,085.88 = 210,841.68/x
  3. Step 3: Cross multiply
    368,723.91x = 553,085.88 × 210,841.68
  4. Step 4: Simplify right side
    368,723.91x = 116,613,556,123.48
  5. Step 5: Solve for x
    x = 116,613,556,123.48/368,723.91
  6. Step 6: Final answer
    x = 316,262.53

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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.