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Finding the Fourth Proportional to 364,555.12, 546,829.40 and 115,237.20

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Solution

The fourth proportional to 364,555.12, 546,829.40 and 115,237.20 is: 172,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,555.12 : 546,829.40 = 115,237.20 : x
  2. Step 2: Convert to fraction form
    364,555.12/546,829.40 = 115,237.20/x
  3. Step 3: Cross multiply
    364,555.12x = 546,829.40 × 115,237.20
  4. Step 4: Simplify right side
    364,555.12x = 63,015,088,933.68
  5. Step 5: Solve for x
    x = 63,015,088,933.68/364,555.12
  6. Step 6: Final answer
    x = 172,854.76

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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.