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Finding the Fourth Proportional to 85,406.86, 117,862.40 and 47,166.34

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Solution

The fourth proportional to 85,406.86, 117,862.40 and 47,166.34 is: 65,090.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,406.86 : 117,862.40 = 47,166.34 : x
  2. Step 2: Convert to fraction form
    85,406.86/117,862.40 = 47,166.34/x
  3. Step 3: Cross multiply
    85,406.86x = 117,862.40 × 47,166.34
  4. Step 4: Simplify right side
    85,406.86x = 5,559,138,031.62
  5. Step 5: Solve for x
    x = 5,559,138,031.62/85,406.86
  6. Step 6: Final answer
    x = 65,090.06

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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.