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Finding the Fourth Proportional to 74,061.93, 102,176.93 and 51,389.58

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Solution

The fourth proportional to 74,061.93, 102,176.93 and 51,389.58 is: 70,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,061.93 : 102,176.93 = 51,389.58 : x
  2. Step 2: Convert to fraction form
    74,061.93/102,176.93 = 51,389.58/x
  3. Step 3: Cross multiply
    74,061.93x = 102,176.93 × 51,389.58
  4. Step 4: Simplify right side
    74,061.93x = 5,250,828,750.56
  5. Step 5: Solve for x
    x = 5,250,828,750.56/74,061.93
  6. Step 6: Final answer
    x = 70,897.81

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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.