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Finding the Fourth Proportional to 85,959.87, 128,966.19 and 41,038.53

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Solution

The fourth proportional to 85,959.87, 128,966.19 and 41,038.53 is: 61,570.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,959.87 : 128,966.19 = 41,038.53 : x
  2. Step 2: Convert to fraction form
    85,959.87/128,966.19 = 41,038.53/x
  3. Step 3: Cross multiply
    85,959.87x = 128,966.19 × 41,038.53
  4. Step 4: Simplify right side
    85,959.87x = 5,292,582,857.30
  5. Step 5: Solve for x
    x = 5,292,582,857.30/85,959.87
  6. Step 6: Final answer
    x = 61,570.39

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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.