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Finding the Fourth Proportional to 60,349.80, 90,467.10 and 47,015.40

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Solution

The fourth proportional to 60,349.80, 90,467.10 and 47,015.40 is: 70,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,349.80 : 90,467.10 = 47,015.40 : x
  2. Step 2: Convert to fraction form
    60,349.80/90,467.10 = 47,015.40/x
  3. Step 3: Cross multiply
    60,349.80x = 90,467.10 × 47,015.40
  4. Step 4: Simplify right side
    60,349.80x = 4,253,346,893.34
  5. Step 5: Solve for x
    x = 4,253,346,893.34/60,349.80
  6. Step 6: Final answer
    x = 70,478.23

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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.