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Finding the Fourth Proportional to 59,740.80, 89,611.20 and 53,289.60

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Solution

The fourth proportional to 59,740.80, 89,611.20 and 53,289.60 is: 79,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,740.80 : 89,611.20 = 53,289.60 : x
  2. Step 2: Convert to fraction form
    59,740.80/89,611.20 = 53,289.60/x
  3. Step 3: Cross multiply
    59,740.80x = 89,611.20 × 53,289.60
  4. Step 4: Simplify right side
    59,740.80x = 4,775,345,003.52
  5. Step 5: Solve for x
    x = 4,775,345,003.52/59,740.80
  6. Step 6: Final answer
    x = 79,934.40

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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.