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Finding the Fourth Proportional to 65,718.42, 90,657.73 and 44,490.26

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Solution

The fourth proportional to 65,718.42, 90,657.73 and 44,490.26 is: 61,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,718.42 : 90,657.73 = 44,490.26 : x
  2. Step 2: Convert to fraction form
    65,718.42/90,657.73 = 44,490.26/x
  3. Step 3: Cross multiply
    65,718.42x = 90,657.73 × 44,490.26
  4. Step 4: Simplify right side
    65,718.42x = 4,033,385,978.71
  5. Step 5: Solve for x
    x = 4,033,385,978.71/65,718.42
  6. Step 6: Final answer
    x = 61,373.75

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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.