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Finding the Fourth Proportional to 262,511.55, 393,830.10 and 85,018.68

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Solution

The fourth proportional to 262,511.55, 393,830.10 and 85,018.68 is: 127,548.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,511.55 : 393,830.10 = 85,018.68 : x
  2. Step 2: Convert to fraction form
    262,511.55/393,830.10 = 85,018.68/x
  3. Step 3: Cross multiply
    262,511.55x = 393,830.10 × 85,018.68
  4. Step 4: Simplify right side
    262,511.55x = 33,482,915,246.27
  5. Step 5: Solve for x
    x = 33,482,915,246.27/262,511.55
  6. Step 6: Final answer
    x = 127,548.35

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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.