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Finding the Fourth Proportional to 176,431.91, 243,479.93 and 104,812.11

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Solution

The fourth proportional to 176,431.91, 243,479.93 and 104,812.11 is: 144,643.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,431.91 : 243,479.93 = 104,812.11 : x
  2. Step 2: Convert to fraction form
    176,431.91/243,479.93 = 104,812.11/x
  3. Step 3: Cross multiply
    176,431.91x = 243,479.93 × 104,812.11
  4. Step 4: Simplify right side
    176,431.91x = 25,519,644,681.89
  5. Step 5: Solve for x
    x = 25,519,644,681.89/176,431.91
  6. Step 6: Final answer
    x = 144,643.03

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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.