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Finding the Fourth Proportional to 661,058.67, 991,588.33 and 436,366.59

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Solution

The fourth proportional to 661,058.67, 991,588.33 and 436,366.59 is: 654,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,058.67 : 991,588.33 = 436,366.59 : x
  2. Step 2: Convert to fraction form
    661,058.67/991,588.33 = 436,366.59/x
  3. Step 3: Cross multiply
    661,058.67x = 991,588.33 × 436,366.59
  4. Step 4: Simplify right side
    661,058.67x = 432,696,018,245.90
  5. Step 5: Solve for x
    x = 432,696,018,245.90/661,058.67
  6. Step 6: Final answer
    x = 654,550.10

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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.