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Finding the Fourth Proportional to 515,802.21, 773,666.60 and 136,714.52

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Solution

The fourth proportional to 515,802.21, 773,666.60 and 136,714.52 is: 205,062.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,802.21 : 773,666.60 = 136,714.52 : x
  2. Step 2: Convert to fraction form
    515,802.21/773,666.60 = 136,714.52/x
  3. Step 3: Cross multiply
    515,802.21x = 773,666.60 × 136,714.52
  4. Step 4: Simplify right side
    515,802.21x = 105,771,453,307.13
  5. Step 5: Solve for x
    x = 105,771,453,307.13/515,802.21
  6. Step 6: Final answer
    x = 205,062.04

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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.