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Finding the Fourth Proportional to 575,870.32, 863,436.40 and 239,143.40

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Solution

The fourth proportional to 575,870.32, 863,436.40 and 239,143.40 is: 358,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,870.32 : 863,436.40 = 239,143.40 : x
  2. Step 2: Convert to fraction form
    575,870.32/863,436.40 = 239,143.40/x
  3. Step 3: Cross multiply
    575,870.32x = 863,436.40 × 239,143.40
  4. Step 4: Simplify right side
    575,870.32x = 206,485,116,379.76
  5. Step 5: Solve for x
    x = 206,485,116,379.76/575,870.32
  6. Step 6: Final answer
    x = 358,561.83

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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.