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Finding the Fourth Proportional to 59,921.40, 89,903.70 and 57,761.40

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Solution

The fourth proportional to 59,921.40, 89,903.70 and 57,761.40 is: 86,662.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,921.40 : 89,903.70 = 57,761.40 : x
  2. Step 2: Convert to fraction form
    59,921.40/89,903.70 = 57,761.40/x
  3. Step 3: Cross multiply
    59,921.40x = 89,903.70 × 57,761.40
  4. Step 4: Simplify right side
    59,921.40x = 5,192,963,577.18
  5. Step 5: Solve for x
    x = 5,192,963,577.18/59,921.40
  6. Step 6: Final answer
    x = 86,662.92

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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.