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Finding the Fourth Proportional to 609,065.79, 840,317.57 and 354,367.77

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Solution

The fourth proportional to 609,065.79, 840,317.57 and 354,367.77 is: 488,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,065.79 : 840,317.57 = 354,367.77 : x
  2. Step 2: Convert to fraction form
    609,065.79/840,317.57 = 354,367.77/x
  3. Step 3: Cross multiply
    609,065.79x = 840,317.57 × 354,367.77
  4. Step 4: Simplify right side
    609,065.79x = 297,781,461,600.88
  5. Step 5: Solve for x
    x = 297,781,461,600.88/609,065.79
  6. Step 6: Final answer
    x = 488,915.10

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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.