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Finding the Fourth Proportional to 65,698.62, 90,653.67 and 37,404.86

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Solution

The fourth proportional to 65,698.62, 90,653.67 and 37,404.86 is: 51,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,698.62 : 90,653.67 = 37,404.86 : x
  2. Step 2: Convert to fraction form
    65,698.62/90,653.67 = 37,404.86/x
  3. Step 3: Cross multiply
    65,698.62x = 90,653.67 × 37,404.86
  4. Step 4: Simplify right side
    65,698.62x = 3,390,887,834.84
  5. Step 5: Solve for x
    x = 3,390,887,834.84/65,698.62
  6. Step 6: Final answer
    x = 51,612.77

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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.