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Finding the Fourth Proportional to 492,061.65, 738,092.48 and 137,130.45

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Solution

The fourth proportional to 492,061.65, 738,092.48 and 137,130.45 is: 205,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,061.65 : 738,092.48 = 137,130.45 : x
  2. Step 2: Convert to fraction form
    492,061.65/738,092.48 = 137,130.45/x
  3. Step 3: Cross multiply
    492,061.65x = 738,092.48 × 137,130.45
  4. Step 4: Simplify right side
    492,061.65x = 101,214,953,238.36
  5. Step 5: Solve for x
    x = 101,214,953,238.36/492,061.65
  6. Step 6: Final answer
    x = 205,695.68

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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.