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Finding the Fourth Proportional to 70,135.76, 96,783.60 and 38,298.44

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Solution

The fourth proportional to 70,135.76, 96,783.60 and 38,298.44 is: 52,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,135.76 : 96,783.60 = 38,298.44 : x
  2. Step 2: Convert to fraction form
    70,135.76/96,783.60 = 38,298.44/x
  3. Step 3: Cross multiply
    70,135.76x = 96,783.60 × 38,298.44
  4. Step 4: Simplify right side
    70,135.76x = 3,706,660,897.58
  5. Step 5: Solve for x
    x = 3,706,660,897.58/70,135.76
  6. Step 6: Final answer
    x = 52,849.80

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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.