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Finding the Fourth Proportional to 64,209.80, 96,314.70 and 60,321.80

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Solution

The fourth proportional to 64,209.80, 96,314.70 and 60,321.80 is: 90,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,209.80 : 96,314.70 = 60,321.80 : x
  2. Step 2: Convert to fraction form
    64,209.80/96,314.70 = 60,321.80/x
  3. Step 3: Cross multiply
    64,209.80x = 96,314.70 × 60,321.80
  4. Step 4: Simplify right side
    64,209.80x = 5,809,876,070.46
  5. Step 5: Solve for x
    x = 5,809,876,070.46/64,209.80
  6. Step 6: Final answer
    x = 90,482.70

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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.