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Finding the Fourth Proportional to 665,927.66, 998,580.93 and 345,993.53

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Solution

The fourth proportional to 665,927.66, 998,580.93 and 345,993.53 is: 518,828.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,927.66 : 998,580.93 = 345,993.53 : x
  2. Step 2: Convert to fraction form
    665,927.66/998,580.93 = 345,993.53/x
  3. Step 3: Cross multiply
    665,927.66x = 998,580.93 × 345,993.53
  4. Step 4: Simplify right side
    665,927.66x = 345,502,535,968.48
  5. Step 5: Solve for x
    x = 345,502,535,968.48/665,927.66
  6. Step 6: Final answer
    x = 518,828.93

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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.