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Finding the Fourth Proportional to 351,875.70, 527,813.60 and 85,636.22

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Solution

The fourth proportional to 351,875.70, 527,813.60 and 85,636.22 is: 128,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,875.70 : 527,813.60 = 85,636.22 : x
  2. Step 2: Convert to fraction form
    351,875.70/527,813.60 = 85,636.22/x
  3. Step 3: Cross multiply
    351,875.70x = 527,813.60 × 85,636.22
  4. Step 4: Simplify right side
    351,875.70x = 45,199,958,501.34
  5. Step 5: Solve for x
    x = 45,199,958,501.34/351,875.70
  6. Step 6: Final answer
    x = 128,454.33

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1.5x scale

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.