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Finding the Fourth Proportional to 355,409.19, 533,141.33 and 118,752.71

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Solution

The fourth proportional to 355,409.19, 533,141.33 and 118,752.71 is: 178,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,409.19 : 533,141.33 = 118,752.71 : x
  2. Step 2: Convert to fraction form
    355,409.19/533,141.33 = 118,752.71/x
  3. Step 3: Cross multiply
    355,409.19x = 533,141.33 × 118,752.71
  4. Step 4: Simplify right side
    355,409.19x = 63,311,974,491.03
  5. Step 5: Solve for x
    x = 63,311,974,491.03/355,409.19
  6. Step 6: Final answer
    x = 178,138.26

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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.