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Finding the Fourth Proportional to 58,796.34, 81,139.12 and 31,938.64

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Solution

The fourth proportional to 58,796.34, 81,139.12 and 31,938.64 is: 44,075.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,796.34 : 81,139.12 = 31,938.64 : x
  2. Step 2: Convert to fraction form
    58,796.34/81,139.12 = 31,938.64/x
  3. Step 3: Cross multiply
    58,796.34x = 81,139.12 × 31,938.64
  4. Step 4: Simplify right side
    58,796.34x = 2,591,473,143.60
  5. Step 5: Solve for x
    x = 2,591,473,143.60/58,796.34
  6. Step 6: Final answer
    x = 44,075.42

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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.