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Finding the Fourth Proportional to 104,486.77, 156,730.16 and 42,113.53

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Solution

The fourth proportional to 104,486.77, 156,730.16 and 42,113.53 is: 63,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,486.77 : 156,730.16 = 42,113.53 : x
  2. Step 2: Convert to fraction form
    104,486.77/156,730.16 = 42,113.53/x
  3. Step 3: Cross multiply
    104,486.77x = 156,730.16 × 42,113.53
  4. Step 4: Simplify right side
    104,486.77x = 6,600,460,596.26
  5. Step 5: Solve for x
    x = 6,600,460,596.26/104,486.77
  6. Step 6: Final answer
    x = 63,170.30

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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.