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Finding the Fourth Proportional to 59,762.40, 89,643.60 and 57,040.80

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Solution

The fourth proportional to 59,762.40, 89,643.60 and 57,040.80 is: 85,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,762.40 : 89,643.60 = 57,040.80 : x
  2. Step 2: Convert to fraction form
    59,762.40/89,643.60 = 57,040.80/x
  3. Step 3: Cross multiply
    59,762.40x = 89,643.60 × 57,040.80
  4. Step 4: Simplify right side
    59,762.40x = 5,113,342,658.88
  5. Step 5: Solve for x
    x = 5,113,342,658.88/59,762.40
  6. Step 6: Final answer
    x = 85,561.20

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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.