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Finding the Fourth Proportional to 53,661.60, 80,506.80 and 47,858.40

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Solution

The fourth proportional to 53,661.60, 80,506.80 and 47,858.40 is: 71,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,661.60 : 80,506.80 = 47,858.40 : x
  2. Step 2: Convert to fraction form
    53,661.60/80,506.80 = 47,858.40/x
  3. Step 3: Cross multiply
    53,661.60x = 80,506.80 × 47,858.40
  4. Step 4: Simplify right side
    53,661.60x = 3,852,926,637.12
  5. Step 5: Solve for x
    x = 3,852,926,637.12/53,661.60
  6. Step 6: Final answer
    x = 71,800.44

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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.