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Finding the Fourth Proportional to 65,378.32, 90,099.48 and 46,482.64

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Solution

The fourth proportional to 65,378.32, 90,099.48 and 46,482.64 is: 64,058.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,378.32 : 90,099.48 = 46,482.64 : x
  2. Step 2: Convert to fraction form
    65,378.32/90,099.48 = 46,482.64/x
  3. Step 3: Cross multiply
    65,378.32x = 90,099.48 × 46,482.64
  4. Step 4: Simplify right side
    65,378.32x = 4,188,061,693.03
  5. Step 5: Solve for x
    x = 4,188,061,693.03/65,378.32
  6. Step 6: Final answer
    x = 64,058.88

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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.