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Finding the Fourth Proportional to 56,492.80, 84,739.20 and 47,276.80

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Solution

The fourth proportional to 56,492.80, 84,739.20 and 47,276.80 is: 70,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,492.80 : 84,739.20 = 47,276.80 : x
  2. Step 2: Convert to fraction form
    56,492.80/84,739.20 = 47,276.80/x
  3. Step 3: Cross multiply
    56,492.80x = 84,739.20 × 47,276.80
  4. Step 4: Simplify right side
    56,492.80x = 4,006,198,210.56
  5. Step 5: Solve for x
    x = 4,006,198,210.56/56,492.80
  6. Step 6: Final answer
    x = 70,915.20

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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.