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Finding the Fourth Proportional to 77,812.15, 116,554.20 and 77,812.15

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Solution

The fourth proportional to 77,812.15, 116,554.20 and 77,812.15 is: 116,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.15 : 116,554.20 = 77,812.15 : x
  2. Step 2: Convert to fraction form
    77,812.15/116,554.20 = 77,812.15/x
  3. Step 3: Cross multiply
    77,812.15x = 116,554.20 × 77,812.15
  4. Step 4: Simplify right side
    77,812.15x = 9,069,332,893.53
  5. Step 5: Solve for x
    x = 9,069,332,893.53/77,812.15
  6. Step 6: Final answer
    x = 116,554.20

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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.