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Finding the Fourth Proportional to 529,778.34, 731,088.57 and 394,417.62

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Solution

The fourth proportional to 529,778.34, 731,088.57 and 394,417.62 is: 544,292.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,778.34 : 731,088.57 = 394,417.62 : x
  2. Step 2: Convert to fraction form
    529,778.34/731,088.57 = 394,417.62/x
  3. Step 3: Cross multiply
    529,778.34x = 731,088.57 × 394,417.62
  4. Step 4: Simplify right side
    529,778.34x = 288,354,213,788.60
  5. Step 5: Solve for x
    x = 288,354,213,788.60/529,778.34
  6. Step 6: Final answer
    x = 544,292.19

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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.