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Finding the Fourth Proportional to 63,031.80, 86,988.60 and 34,737.60

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Solution

The fourth proportional to 63,031.80, 86,988.60 and 34,737.60 is: 47,940.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,031.80 : 86,988.60 = 34,737.60 : x
  2. Step 2: Convert to fraction form
    63,031.80/86,988.60 = 34,737.60/x
  3. Step 3: Cross multiply
    63,031.80x = 86,988.60 × 34,737.60
  4. Step 4: Simplify right side
    63,031.80x = 3,021,775,191.36
  5. Step 5: Solve for x
    x = 3,021,775,191.36/63,031.80
  6. Step 6: Final answer
    x = 47,940.49

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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.