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Finding the Fourth Proportional to 651,690.71, 899,076.60 and 406,532.80

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Solution

The fourth proportional to 651,690.71, 899,076.60 and 406,532.80 is: 560,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,690.71 : 899,076.60 = 406,532.80 : x
  2. Step 2: Convert to fraction form
    651,690.71/899,076.60 = 406,532.80/x
  3. Step 3: Cross multiply
    651,690.71x = 899,076.60 × 406,532.80
  4. Step 4: Simplify right side
    651,690.71x = 365,504,127,612.48
  5. Step 5: Solve for x
    x = 365,504,127,612.48/651,690.71
  6. Step 6: Final answer
    x = 560,855.21

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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.