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Finding the Fourth Proportional to 689,863.60, 952,125.60 and 403,328.80

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Solution

The fourth proportional to 689,863.60, 952,125.60 and 403,328.80 is: 556,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,863.60 : 952,125.60 = 403,328.80 : x
  2. Step 2: Convert to fraction form
    689,863.60/952,125.60 = 403,328.80/x
  3. Step 3: Cross multiply
    689,863.60x = 952,125.60 × 403,328.80
  4. Step 4: Simplify right side
    689,863.60x = 384,019,675,697.28
  5. Step 5: Solve for x
    x = 384,019,675,697.28/689,863.60
  6. Step 6: Final answer
    x = 556,660.30

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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.