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Finding the Fourth Proportional to 71,130.20, 106,598.10 and 47,370.20

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Solution

The fourth proportional to 71,130.20, 106,598.10 and 47,370.20 is: 70,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.20 : 106,598.10 = 47,370.20 : x
  2. Step 2: Convert to fraction form
    71,130.20/106,598.10 = 47,370.20/x
  3. Step 3: Cross multiply
    71,130.20x = 106,598.10 × 47,370.20
  4. Step 4: Simplify right side
    71,130.20x = 5,049,573,316.62
  5. Step 5: Solve for x
    x = 5,049,573,316.62/71,130.20
  6. Step 6: Final answer
    x = 70,990.57

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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.