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Finding the Fourth Proportional to 79,807.20, 119,710.80 and 46,564.80

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Solution

The fourth proportional to 79,807.20, 119,710.80 and 46,564.80 is: 69,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,807.20 : 119,710.80 = 46,564.80 : x
  2. Step 2: Convert to fraction form
    79,807.20/119,710.80 = 46,564.80/x
  3. Step 3: Cross multiply
    79,807.20x = 119,710.80 × 46,564.80
  4. Step 4: Simplify right side
    79,807.20x = 5,574,309,459.84
  5. Step 5: Solve for x
    x = 5,574,309,459.84/79,807.20
  6. Step 6: Final answer
    x = 69,847.20

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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.