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Finding the Fourth Proportional to 621,458.77, 931,337.67 and 469,530.95

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Solution

The fourth proportional to 621,458.77, 931,337.67 and 469,530.95 is: 703,653.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,458.77 : 931,337.67 = 469,530.95 : x
  2. Step 2: Convert to fraction form
    621,458.77/931,337.67 = 469,530.95/x
  3. Step 3: Cross multiply
    621,458.77x = 931,337.67 × 469,530.95
  4. Step 4: Simplify right side
    621,458.77x = 437,291,860,965.89
  5. Step 5: Solve for x
    x = 437,291,860,965.89/621,458.77
  6. Step 6: Final answer
    x = 703,653.86

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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.