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Finding the Fourth Proportional to 505,377.89, 697,339.23 and 298,617.53

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Solution

The fourth proportional to 505,377.89, 697,339.23 and 298,617.53 is: 412,043.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,377.89 : 697,339.23 = 298,617.53 : x
  2. Step 2: Convert to fraction form
    505,377.89/697,339.23 = 298,617.53/x
  3. Step 3: Cross multiply
    505,377.89x = 697,339.23 × 298,617.53
  4. Step 4: Simplify right side
    505,377.89x = 208,237,717,750.72
  5. Step 5: Solve for x
    x = 208,237,717,750.72/505,377.89
  6. Step 6: Final answer
    x = 412,043.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.