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Finding the Fourth Proportional to 77,812.80, 116,719.20 and 62,260.80

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Solution

The fourth proportional to 77,812.80, 116,719.20 and 62,260.80 is: 93,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.80 : 116,719.20 = 62,260.80 : x
  2. Step 2: Convert to fraction form
    77,812.80/116,719.20 = 62,260.80/x
  3. Step 3: Cross multiply
    77,812.80x = 116,719.20 × 62,260.80
  4. Step 4: Simplify right side
    77,812.80x = 7,267,030,767.36
  5. Step 5: Solve for x
    x = 7,267,030,767.36/77,812.80
  6. Step 6: Final answer
    x = 93,391.20

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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.