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Finding the Fourth Proportional to 74,248.96, 102,477 and 47,399.80

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Solution

The fourth proportional to 74,248.96, 102,477 and 47,399.80 is: 65,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,248.96 : 102,477 = 47,399.80 : x
  2. Step 2: Convert to fraction form
    74,248.96/102,477 = 47,399.80/x
  3. Step 3: Cross multiply
    74,248.96x = 102,477 × 47,399.80
  4. Step 4: Simplify right side
    74,248.96x = 4,857,389,304.60
  5. Step 5: Solve for x
    x = 4,857,389,304.60/74,248.96
  6. Step 6: Final answer
    x = 65,420.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.