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Finding the Fourth Proportional to 160,643.40, 240,976.92 and 42,313.89

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Solution

The fourth proportional to 160,643.40, 240,976.92 and 42,313.89 is: 63,473.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,643.40 : 240,976.92 = 42,313.89 : x
  2. Step 2: Convert to fraction form
    160,643.40/240,976.92 = 42,313.89/x
  3. Step 3: Cross multiply
    160,643.40x = 240,976.92 × 42,313.89
  4. Step 4: Simplify right side
    160,643.40x = 10,196,670,885.42
  5. Step 5: Solve for x
    x = 10,196,670,885.42/160,643.40
  6. Step 6: Final answer
    x = 63,473.95

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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.