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Finding the Fourth Proportional to 363,813.66, 545,970.15 and 127,156.50

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Solution

The fourth proportional to 363,813.66, 545,970.15 and 127,156.50 is: 190,822.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,813.66 : 545,970.15 = 127,156.50 : x
  2. Step 2: Convert to fraction form
    363,813.66/545,970.15 = 127,156.50/x
  3. Step 3: Cross multiply
    363,813.66x = 545,970.15 × 127,156.50
  4. Step 4: Simplify right side
    363,813.66x = 69,423,653,378.48
  5. Step 5: Solve for x
    x = 69,423,653,378.48/363,813.66
  6. Step 6: Final answer
    x = 190,822.01

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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.