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Finding the Fourth Proportional to 38,686.79, 53,040.09 and 37,986.95

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Solution

The fourth proportional to 38,686.79, 53,040.09 and 37,986.95 is: 52,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,686.79 : 53,040.09 = 37,986.95 : x
  2. Step 2: Convert to fraction form
    38,686.79/53,040.09 = 37,986.95/x
  3. Step 3: Cross multiply
    38,686.79x = 53,040.09 × 37,986.95
  4. Step 4: Simplify right side
    38,686.79x = 2,014,831,308.20
  5. Step 5: Solve for x
    x = 2,014,831,308.20/38,686.79
  6. Step 6: Final answer
    x = 52,080.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.