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Finding the Fourth Proportional to 59,879.60, 89,819.40 and 53,140.40

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Solution

The fourth proportional to 59,879.60, 89,819.40 and 53,140.40 is: 79,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,879.60 : 89,819.40 = 53,140.40 : x
  2. Step 2: Convert to fraction form
    59,879.60/89,819.40 = 53,140.40/x
  3. Step 3: Cross multiply
    59,879.60x = 89,819.40 × 53,140.40
  4. Step 4: Simplify right side
    59,879.60x = 4,773,038,843.76
  5. Step 5: Solve for x
    x = 4,773,038,843.76/59,879.60
  6. Step 6: Final answer
    x = 79,710.60

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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.