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Finding the Fourth Proportional to 117,904.36, 162,816.08 and 74,897.71

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Solution

The fourth proportional to 117,904.36, 162,816.08 and 74,897.71 is: 103,427.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,904.36 : 162,816.08 = 74,897.71 : x
  2. Step 2: Convert to fraction form
    117,904.36/162,816.08 = 74,897.71/x
  3. Step 3: Cross multiply
    117,904.36x = 162,816.08 × 74,897.71
  4. Step 4: Simplify right side
    117,904.36x = 12,194,551,543.18
  5. Step 5: Solve for x
    x = 12,194,551,543.18/117,904.36
  6. Step 6: Final answer
    x = 103,427.49

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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.