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Finding the Fourth Proportional to 59,711.80, 89,567.70 and 57,087.40

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Solution

The fourth proportional to 59,711.80, 89,567.70 and 57,087.40 is: 85,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,711.80 : 89,567.70 = 57,087.40 : x
  2. Step 2: Convert to fraction form
    59,711.80/89,567.70 = 57,087.40/x
  3. Step 3: Cross multiply
    59,711.80x = 89,567.70 × 57,087.40
  4. Step 4: Simplify right side
    59,711.80x = 5,113,187,116.98
  5. Step 5: Solve for x
    x = 5,113,187,116.98/59,711.80
  6. Step 6: Final answer
    x = 85,631.10

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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.