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Finding the Fourth Proportional to 289,543.77, 399,071.40 and 192,574.23

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Solution

The fourth proportional to 289,543.77, 399,071.40 and 192,574.23 is: 265,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,543.77 : 399,071.40 = 192,574.23 : x
  2. Step 2: Convert to fraction form
    289,543.77/399,071.40 = 192,574.23/x
  3. Step 3: Cross multiply
    289,543.77x = 399,071.40 × 192,574.23
  4. Step 4: Simplify right side
    289,543.77x = 76,850,867,570.02
  5. Step 5: Solve for x
    x = 76,850,867,570.02/289,543.77
  6. Step 6: Final answer
    x = 265,420.55

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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.