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Finding the Fourth Proportional to 364,653.60, 546,721.20 and 139,927.20

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Solution

The fourth proportional to 364,653.60, 546,721.20 and 139,927.20 is: 209,791.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,653.60 : 546,721.20 = 139,927.20 : x
  2. Step 2: Convert to fraction form
    364,653.60/546,721.20 = 139,927.20/x
  3. Step 3: Cross multiply
    364,653.60x = 546,721.20 × 139,927.20
  4. Step 4: Simplify right side
    364,653.60x = 76,501,166,696.64
  5. Step 5: Solve for x
    x = 76,501,166,696.64/364,653.60
  6. Step 6: Final answer
    x = 209,791.34

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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.