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Finding the Fourth Proportional to 70,230.18, 96,893.90 and 39,994.07

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Solution

The fourth proportional to 70,230.18, 96,893.90 and 39,994.07 is: 55,178.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,230.18 : 96,893.90 = 39,994.07 : x
  2. Step 2: Convert to fraction form
    70,230.18/96,893.90 = 39,994.07/x
  3. Step 3: Cross multiply
    70,230.18x = 96,893.90 × 39,994.07
  4. Step 4: Simplify right side
    70,230.18x = 3,875,181,419.17
  5. Step 5: Solve for x
    x = 3,875,181,419.17/70,230.18
  6. Step 6: Final answer
    x = 55,178.29

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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.