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Finding the Fourth Proportional to 70,017.74, 96,620.62 and 39,798.86

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Solution

The fourth proportional to 70,017.74, 96,620.62 and 39,798.86 is: 54,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,017.74 : 96,620.62 = 39,798.86 : x
  2. Step 2: Convert to fraction form
    70,017.74/96,620.62 = 39,798.86/x
  3. Step 3: Cross multiply
    70,017.74x = 96,620.62 × 39,798.86
  4. Step 4: Simplify right side
    70,017.74x = 3,845,390,528.49
  5. Step 5: Solve for x
    x = 3,845,390,528.49/70,017.74
  6. Step 6: Final answer
    x = 54,920.23

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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.