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Finding the Fourth Proportional to 46,387.20, 69,580.80 and 43,276.80

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Solution

The fourth proportional to 46,387.20, 69,580.80 and 43,276.80 is: 64,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,387.20 : 69,580.80 = 43,276.80 : x
  2. Step 2: Convert to fraction form
    46,387.20/69,580.80 = 43,276.80/x
  3. Step 3: Cross multiply
    46,387.20x = 69,580.80 × 43,276.80
  4. Step 4: Simplify right side
    46,387.20x = 3,011,234,365.44
  5. Step 5: Solve for x
    x = 3,011,234,365.44/46,387.20
  6. Step 6: Final answer
    x = 64,915.20

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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.