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Finding the Fourth Proportional to 364,501.10, 546,696.20 and 139,967.28

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Solution

The fourth proportional to 364,501.10, 546,696.20 and 139,967.28 is: 209,929.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,501.10 : 546,696.20 = 139,967.28 : x
  2. Step 2: Convert to fraction form
    364,501.10/546,696.20 = 139,967.28/x
  3. Step 3: Cross multiply
    364,501.10x = 546,696.20 × 139,967.28
  4. Step 4: Simplify right side
    364,501.10x = 76,519,579,400.50
  5. Step 5: Solve for x
    x = 76,519,579,400.50/364,501.10
  6. Step 6: Final answer
    x = 209,929.63

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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.