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Finding the Fourth Proportional to 104,445.80, 156,611.10 and 42,045.80

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Solution

The fourth proportional to 104,445.80, 156,611.10 and 42,045.80 is: 63,045.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,445.80 : 156,611.10 = 42,045.80 : x
  2. Step 2: Convert to fraction form
    104,445.80/156,611.10 = 42,045.80/x
  3. Step 3: Cross multiply
    104,445.80x = 156,611.10 × 42,045.80
  4. Step 4: Simplify right side
    104,445.80x = 6,584,838,988.38
  5. Step 5: Solve for x
    x = 6,584,838,988.38/104,445.80
  6. Step 6: Final answer
    x = 63,045.51

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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.