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Finding the Fourth Proportional to 64,013.60, 96,020.40 and 60,557.60

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Solution

The fourth proportional to 64,013.60, 96,020.40 and 60,557.60 is: 90,836.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,013.60 : 96,020.40 = 60,557.60 : x
  2. Step 2: Convert to fraction form
    64,013.60/96,020.40 = 60,557.60/x
  3. Step 3: Cross multiply
    64,013.60x = 96,020.40 × 60,557.60
  4. Step 4: Simplify right side
    64,013.60x = 5,814,764,975.04
  5. Step 5: Solve for x
    x = 5,814,764,975.04/64,013.60
  6. Step 6: Final answer
    x = 90,836.40

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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.