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Finding the Fourth Proportional to 77,775.57, 116,681.81 and 25,184.97

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Solution

The fourth proportional to 77,775.57, 116,681.81 and 25,184.97 is: 37,783.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,775.57 : 116,681.81 = 25,184.97 : x
  2. Step 2: Convert to fraction form
    77,775.57/116,681.81 = 25,184.97/x
  3. Step 3: Cross multiply
    77,775.57x = 116,681.81 × 25,184.97
  4. Step 4: Simplify right side
    77,775.57x = 2,938,627,758.47
  5. Step 5: Solve for x
    x = 2,938,627,758.47/77,775.57
  6. Step 6: Final answer
    x = 37,783.43

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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.