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Finding the Fourth Proportional to 84,812.80, 118,582.40 and 84,812.80

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Solution

The fourth proportional to 84,812.80, 118,582.40 and 84,812.80 is: 118,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,812.80 : 118,582.40 = 84,812.80 : x
  2. Step 2: Convert to fraction form
    84,812.80/118,582.40 = 84,812.80/x
  3. Step 3: Cross multiply
    84,812.80x = 118,582.40 × 84,812.80
  4. Step 4: Simplify right side
    84,812.80x = 10,057,305,374.72
  5. Step 5: Solve for x
    x = 10,057,305,374.72/84,812.80
  6. Step 6: Final answer
    x = 118,582.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.