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Finding the Fourth Proportional to 48,784.35, 73,174.80 and 20,686.32

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Solution

The fourth proportional to 48,784.35, 73,174.80 and 20,686.32 is: 31,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,784.35 : 73,174.80 = 20,686.32 : x
  2. Step 2: Convert to fraction form
    48,784.35/73,174.80 = 20,686.32/x
  3. Step 3: Cross multiply
    48,784.35x = 73,174.80 × 20,686.32
  4. Step 4: Simplify right side
    48,784.35x = 1,513,717,328.74
  5. Step 5: Solve for x
    x = 1,513,717,328.74/48,784.35
  6. Step 6: Final answer
    x = 31,028.75

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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.