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Finding the Fourth Proportional to 65,244.96, 90,078.48 and 58,518.72

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Solution

The fourth proportional to 65,244.96, 90,078.48 and 58,518.72 is: 80,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,244.96 : 90,078.48 = 58,518.72 : x
  2. Step 2: Convert to fraction form
    65,244.96/90,078.48 = 58,518.72/x
  3. Step 3: Cross multiply
    65,244.96x = 90,078.48 × 58,518.72
  4. Step 4: Simplify right side
    65,244.96x = 5,271,277,349.15
  5. Step 5: Solve for x
    x = 5,271,277,349.15/65,244.96
  6. Step 6: Final answer
    x = 80,792.10

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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.