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Finding the Fourth Proportional to 216,509.40, 324,764.10 and 58,737.60

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Solution

The fourth proportional to 216,509.40, 324,764.10 and 58,737.60 is: 88,106.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,509.40 : 324,764.10 = 58,737.60 : x
  2. Step 2: Convert to fraction form
    216,509.40/324,764.10 = 58,737.60/x
  3. Step 3: Cross multiply
    216,509.40x = 324,764.10 × 58,737.60
  4. Step 4: Simplify right side
    216,509.40x = 19,075,863,800.16
  5. Step 5: Solve for x
    x = 19,075,863,800.16/216,509.40
  6. Step 6: Final answer
    x = 88,106.40

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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.