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Finding the Fourth Proportional to 65,726.80, 98,590.20 and 47,064.40

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Solution

The fourth proportional to 65,726.80, 98,590.20 and 47,064.40 is: 70,596.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,726.80 : 98,590.20 = 47,064.40 : x
  2. Step 2: Convert to fraction form
    65,726.80/98,590.20 = 47,064.40/x
  3. Step 3: Cross multiply
    65,726.80x = 98,590.20 × 47,064.40
  4. Step 4: Simplify right side
    65,726.80x = 4,640,088,608.88
  5. Step 5: Solve for x
    x = 4,640,088,608.88/65,726.80
  6. Step 6: Final answer
    x = 70,596.60

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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.