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Finding the Fourth Proportional to 38,963.80, 58,445.70 and 37,811.80

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Solution

The fourth proportional to 38,963.80, 58,445.70 and 37,811.80 is: 56,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,963.80 : 58,445.70 = 37,811.80 : x
  2. Step 2: Convert to fraction form
    38,963.80/58,445.70 = 37,811.80/x
  3. Step 3: Cross multiply
    38,963.80x = 58,445.70 × 37,811.80
  4. Step 4: Simplify right side
    38,963.80x = 2,209,937,119.26
  5. Step 5: Solve for x
    x = 2,209,937,119.26/38,963.80
  6. Step 6: Final answer
    x = 56,717.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.