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Finding the Fourth Proportional to 660,817.50, 991,223.01 and 187,503.72

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Solution

The fourth proportional to 660,817.50, 991,223.01 and 187,503.72 is: 281,254.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,817.50 : 991,223.01 = 187,503.72 : x
  2. Step 2: Convert to fraction form
    660,817.50/991,223.01 = 187,503.72/x
  3. Step 3: Cross multiply
    660,817.50x = 991,223.01 × 187,503.72
  4. Step 4: Simplify right side
    660,817.50x = 185,858,001,724.60
  5. Step 5: Solve for x
    x = 185,858,001,724.60/660,817.50
  6. Step 6: Final answer
    x = 281,254.66

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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.