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Finding the Fourth Proportional to 82,911.60, 114,404.40 and 51,078.60

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Solution

The fourth proportional to 82,911.60, 114,404.40 and 51,078.60 is: 70,480.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,911.60 : 114,404.40 = 51,078.60 : x
  2. Step 2: Convert to fraction form
    82,911.60/114,404.40 = 51,078.60/x
  3. Step 3: Cross multiply
    82,911.60x = 114,404.40 × 51,078.60
  4. Step 4: Simplify right side
    82,911.60x = 5,843,616,585.84
  5. Step 5: Solve for x
    x = 5,843,616,585.84/82,911.60
  6. Step 6: Final answer
    x = 70,480.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.