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Finding the Fourth Proportional to 39,983.60, 53,214.26 and 39,983.60

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Solution

The fourth proportional to 39,983.60, 53,214.26 and 39,983.60 is: 53,214.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,983.60 : 53,214.26 = 39,983.60 : x
  2. Step 2: Convert to fraction form
    39,983.60/53,214.26 = 39,983.60/x
  3. Step 3: Cross multiply
    39,983.60x = 53,214.26 × 39,983.60
  4. Step 4: Simplify right side
    39,983.60x = 2,127,697,686.14
  5. Step 5: Solve for x
    x = 2,127,697,686.14/39,983.60
  6. Step 6: Final answer
    x = 53,214.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.