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Finding the Fourth Proportional to 717,615.87, 990,241.74 and 411,717.45

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Solution

The fourth proportional to 717,615.87, 990,241.74 and 411,717.45 is: 568,130.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,615.87 : 990,241.74 = 411,717.45 : x
  2. Step 2: Convert to fraction form
    717,615.87/990,241.74 = 411,717.45/x
  3. Step 3: Cross multiply
    717,615.87x = 990,241.74 × 411,717.45
  4. Step 4: Simplify right side
    717,615.87x = 407,699,804,076.36
  5. Step 5: Solve for x
    x = 407,699,804,076.36/717,615.87
  6. Step 6: Final answer
    x = 568,130.98

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1.5x scale

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.