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Finding the Fourth Proportional to 114,700.30, 172,050.45 and 72,709.90

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Solution

The fourth proportional to 114,700.30, 172,050.45 and 72,709.90 is: 109,064.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,700.30 : 172,050.45 = 72,709.90 : x
  2. Step 2: Convert to fraction form
    114,700.30/172,050.45 = 72,709.90/x
  3. Step 3: Cross multiply
    114,700.30x = 172,050.45 × 72,709.90
  4. Step 4: Simplify right side
    114,700.30x = 12,509,771,014.46
  5. Step 5: Solve for x
    x = 12,509,771,014.46/114,700.30
  6. Step 6: Final answer
    x = 109,064.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.