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Finding the Fourth Proportional to 85,941.97, 128,963.99 and 46,498.21

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Solution

The fourth proportional to 85,941.97, 128,963.99 and 46,498.21 is: 69,774.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,941.97 : 128,963.99 = 46,498.21 : x
  2. Step 2: Convert to fraction form
    85,941.97/128,963.99 = 46,498.21/x
  3. Step 3: Cross multiply
    85,941.97x = 128,963.99 × 46,498.21
  4. Step 4: Simplify right side
    85,941.97x = 5,996,594,689.46
  5. Step 5: Solve for x
    x = 5,996,594,689.46/85,941.97
  6. Step 6: Final answer
    x = 69,774.93

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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.