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Finding the Fourth Proportional to 718,302.17, 991,256.66 and 412,398.27

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Solution

The fourth proportional to 718,302.17, 991,256.66 and 412,398.27 is: 569,109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,302.17 : 991,256.66 = 412,398.27 : x
  2. Step 2: Convert to fraction form
    718,302.17/991,256.66 = 412,398.27/x
  3. Step 3: Cross multiply
    718,302.17x = 991,256.66 × 412,398.27
  4. Step 4: Simplify right side
    718,302.17x = 408,792,529,647.99
  5. Step 5: Solve for x
    x = 408,792,529,647.99/718,302.17
  6. Step 6: Final answer
    x = 569,109.42

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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.