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Finding the Fourth Proportional to 74,967.57, 103,532.72 and 64,847.43

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Solution

The fourth proportional to 74,967.57, 103,532.72 and 64,847.43 is: 89,556.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,967.57 : 103,532.72 = 64,847.43 : x
  2. Step 2: Convert to fraction form
    74,967.57/103,532.72 = 64,847.43/x
  3. Step 3: Cross multiply
    74,967.57x = 103,532.72 × 64,847.43
  4. Step 4: Simplify right side
    74,967.57x = 6,713,830,488.67
  5. Step 5: Solve for x
    x = 6,713,830,488.67/74,967.57
  6. Step 6: Final answer
    x = 89,556.46

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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.