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Finding the Fourth Proportional to 118,398.66, 177,595.47 and 38,436.50

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Solution

The fourth proportional to 118,398.66, 177,595.47 and 38,436.50 is: 57,653.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,398.66 : 177,595.47 = 38,436.50 : x
  2. Step 2: Convert to fraction form
    118,398.66/177,595.47 = 38,436.50/x
  3. Step 3: Cross multiply
    118,398.66x = 177,595.47 × 38,436.50
  4. Step 4: Simplify right side
    118,398.66x = 6,826,148,389.31
  5. Step 5: Solve for x
    x = 6,826,148,389.31/118,398.66
  6. Step 6: Final answer
    x = 57,653.93

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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.