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Finding the Fourth Proportional to 64,880.34, 89,543.46 and 38,033.40

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Solution

The fourth proportional to 64,880.34, 89,543.46 and 38,033.40 is: 52,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,880.34 : 89,543.46 = 38,033.40 : x
  2. Step 2: Convert to fraction form
    64,880.34/89,543.46 = 38,033.40/x
  3. Step 3: Cross multiply
    64,880.34x = 89,543.46 × 38,033.40
  4. Step 4: Simplify right side
    64,880.34x = 3,405,642,231.56
  5. Step 5: Solve for x
    x = 3,405,642,231.56/64,880.34
  6. Step 6: Final answer
    x = 52,491.13

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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.