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Finding the Fourth Proportional to 452,421.95, 678,632.53 and 115,462.57

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Solution

The fourth proportional to 452,421.95, 678,632.53 and 115,462.57 is: 173,193.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,421.95 : 678,632.53 = 115,462.57 : x
  2. Step 2: Convert to fraction form
    452,421.95/678,632.53 = 115,462.57/x
  3. Step 3: Cross multiply
    452,421.95x = 678,632.53 × 115,462.57
  4. Step 4: Simplify right side
    452,421.95x = 78,356,654,014.16
  5. Step 5: Solve for x
    x = 78,356,654,014.16/452,421.95
  6. Step 6: Final answer
    x = 173,193.75

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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.