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Finding the Fourth Proportional to 176,390.65, 243,390.23 and 103,854.66

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Solution

The fourth proportional to 176,390.65, 243,390.23 and 103,854.66 is: 143,302.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,390.65 : 243,390.23 = 103,854.66 : x
  2. Step 2: Convert to fraction form
    176,390.65/243,390.23 = 103,854.66/x
  3. Step 3: Cross multiply
    176,390.65x = 243,390.23 × 103,854.66
  4. Step 4: Simplify right side
    176,390.65x = 25,277,210,494.69
  5. Step 5: Solve for x
    x = 25,277,210,494.69/176,390.65
  6. Step 6: Final answer
    x = 143,302.44

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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.