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Finding the Fourth Proportional to 76,619.30, 114,715.65 and 39,098.30

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Solution

The fourth proportional to 76,619.30, 114,715.65 and 39,098.30 is: 58,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,619.30 : 114,715.65 = 39,098.30 : x
  2. Step 2: Convert to fraction form
    76,619.30/114,715.65 = 39,098.30/x
  3. Step 3: Cross multiply
    76,619.30x = 114,715.65 × 39,098.30
  4. Step 4: Simplify right side
    76,619.30x = 4,485,186,898.40
  5. Step 5: Solve for x
    x = 4,485,186,898.40/76,619.30
  6. Step 6: Final answer
    x = 58,538.60

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1.5x scale

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.