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Finding the Fourth Proportional to 357,989.48, 536,648.70 and 121,166.44

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Solution

The fourth proportional to 357,989.48, 536,648.70 and 121,166.44 is: 181,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,989.48 : 536,648.70 = 121,166.44 : x
  2. Step 2: Convert to fraction form
    357,989.48/536,648.70 = 121,166.44/x
  3. Step 3: Cross multiply
    357,989.48x = 536,648.70 × 121,166.44
  4. Step 4: Simplify right side
    357,989.48x = 65,023,812,509.63
  5. Step 5: Solve for x
    x = 65,023,812,509.63/357,989.48
  6. Step 6: Final answer
    x = 181,636.10

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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.