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Finding the Fourth Proportional to 505,347.66, 697,411.62 and 290,521.08

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Solution

The fourth proportional to 505,347.66, 697,411.62 and 290,521.08 is: 400,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,347.66 : 697,411.62 = 290,521.08 : x
  2. Step 2: Convert to fraction form
    505,347.66/697,411.62 = 290,521.08/x
  3. Step 3: Cross multiply
    505,347.66x = 697,411.62 × 290,521.08
  4. Step 4: Simplify right side
    505,347.66x = 202,612,777,046.95
  5. Step 5: Solve for x
    x = 202,612,777,046.95/505,347.66
  6. Step 6: Final answer
    x = 400,937.40

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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.