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Finding the Fourth Proportional to 358,607.20, 537,716.40 and 148,007.20

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Solution

The fourth proportional to 358,607.20, 537,716.40 and 148,007.20 is: 221,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,607.20 : 537,716.40 = 148,007.20 : x
  2. Step 2: Convert to fraction form
    358,607.20/537,716.40 = 148,007.20/x
  3. Step 3: Cross multiply
    358,607.20x = 537,716.40 × 148,007.20
  4. Step 4: Simplify right side
    358,607.20x = 79,585,898,758.08
  5. Step 5: Solve for x
    x = 79,585,898,758.08/358,607.20
  6. Step 6: Final answer
    x = 221,930.57

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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.