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Finding the Fourth Proportional to 660,817, 991,222.26 and 187,503.22

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Solution

The fourth proportional to 660,817, 991,222.26 and 187,503.22 is: 281,253.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,817 : 991,222.26 = 187,503.22 : x
  2. Step 2: Convert to fraction form
    660,817/991,222.26 = 187,503.22/x
  3. Step 3: Cross multiply
    660,817x = 991,222.26 × 187,503.22
  4. Step 4: Simplify right side
    660,817x = 185,857,365,485.68
  5. Step 5: Solve for x
    x = 185,857,365,485.68/660,817
  6. Step 6: Final answer
    x = 281,253.91

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1.5x scale

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.