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Finding the Fourth Proportional to 368,643.79, 552,079.95 and 210,392.47

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Solution

The fourth proportional to 368,643.79, 552,079.95 and 210,392.47 is: 315,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,643.79 : 552,079.95 = 210,392.47 : x
  2. Step 2: Convert to fraction form
    368,643.79/552,079.95 = 210,392.47/x
  3. Step 3: Cross multiply
    368,643.79x = 552,079.95 × 210,392.47
  4. Step 4: Simplify right side
    368,643.79x = 116,153,464,317.98
  5. Step 5: Solve for x
    x = 116,153,464,317.98/368,643.79
  6. Step 6: Final answer
    x = 315,083.20

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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.