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Finding the Fourth Proportional to 357,328.91, 535,879.56 and 117,387.11

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Solution

The fourth proportional to 357,328.91, 535,879.56 and 117,387.11 is: 176,043.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,328.91 : 535,879.56 = 117,387.11 : x
  2. Step 2: Convert to fraction form
    357,328.91/535,879.56 = 117,387.11/x
  3. Step 3: Cross multiply
    357,328.91x = 535,879.56 × 117,387.11
  4. Step 4: Simplify right side
    357,328.91x = 62,905,353,387.56
  5. Step 5: Solve for x
    x = 62,905,353,387.56/357,328.91
  6. Step 6: Final answer
    x = 176,043.28

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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.