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Finding the Fourth Proportional to 201,113.10, 301,669.65 and 76,437.90

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Solution

The fourth proportional to 201,113.10, 301,669.65 and 76,437.90 is: 114,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,113.10 : 301,669.65 = 76,437.90 : x
  2. Step 2: Convert to fraction form
    201,113.10/301,669.65 = 76,437.90/x
  3. Step 3: Cross multiply
    201,113.10x = 301,669.65 × 76,437.90
  4. Step 4: Simplify right side
    201,113.10x = 23,058,994,539.74
  5. Step 5: Solve for x
    x = 23,058,994,539.74/201,113.10
  6. Step 6: Final answer
    x = 114,656.85

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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.