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Finding the Fourth Proportional to 402,989.46, 604,462.32 and 122,484.84

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Solution

The fourth proportional to 402,989.46, 604,462.32 and 122,484.84 is: 183,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,989.46 : 604,462.32 = 122,484.84 : x
  2. Step 2: Convert to fraction form
    402,989.46/604,462.32 = 122,484.84/x
  3. Step 3: Cross multiply
    402,989.46x = 604,462.32 × 122,484.84
  4. Step 4: Simplify right side
    402,989.46x = 74,037,470,551.23
  5. Step 5: Solve for x
    x = 74,037,470,551.23/402,989.46
  6. Step 6: Final answer
    x = 183,720.61

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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.