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Finding the Fourth Proportional to 358,511.40, 537,767.10 and 148,559.40

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Solution

The fourth proportional to 358,511.40, 537,767.10 and 148,559.40 is: 222,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,511.40 : 537,767.10 = 148,559.40 : x
  2. Step 2: Convert to fraction form
    358,511.40/537,767.10 = 148,559.40/x
  3. Step 3: Cross multiply
    358,511.40x = 537,767.10 × 148,559.40
  4. Step 4: Simplify right side
    358,511.40x = 79,890,357,715.74
  5. Step 5: Solve for x
    x = 79,890,357,715.74/358,511.40
  6. Step 6: Final answer
    x = 222,839.10

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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.