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Finding the Fourth Proportional to 74,571.90, 102,911.38 and 40,582.58

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Solution

The fourth proportional to 74,571.90, 102,911.38 and 40,582.58 is: 56,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,571.90 : 102,911.38 = 40,582.58 : x
  2. Step 2: Convert to fraction form
    74,571.90/102,911.38 = 40,582.58/x
  3. Step 3: Cross multiply
    74,571.90x = 102,911.38 × 40,582.58
  4. Step 4: Simplify right side
    74,571.90x = 4,176,408,594.29
  5. Step 5: Solve for x
    x = 4,176,408,594.29/74,571.90
  6. Step 6: Final answer
    x = 56,005.13

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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.