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Finding the Fourth Proportional to 353,000.44, 487,143.79 and 191,855.86

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Solution

The fourth proportional to 353,000.44, 487,143.79 and 191,855.86 is: 264,762.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,000.44 : 487,143.79 = 191,855.86 : x
  2. Step 2: Convert to fraction form
    353,000.44/487,143.79 = 191,855.86/x
  3. Step 3: Cross multiply
    353,000.44x = 487,143.79 × 191,855.86
  4. Step 4: Simplify right side
    353,000.44x = 93,461,390,774.11
  5. Step 5: Solve for x
    x = 93,461,390,774.11/353,000.44
  6. Step 6: Final answer
    x = 264,762.82

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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.