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Finding the Fourth Proportional to 101,920.48, 152,887.80 and 42,696.64

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Solution

The fourth proportional to 101,920.48, 152,887.80 and 42,696.64 is: 64,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,920.48 : 152,887.80 = 42,696.64 : x
  2. Step 2: Convert to fraction form
    101,920.48/152,887.80 = 42,696.64/x
  3. Step 3: Cross multiply
    101,920.48x = 152,887.80 × 42,696.64
  4. Step 4: Simplify right side
    101,920.48x = 6,527,795,356.99
  5. Step 5: Solve for x
    x = 6,527,795,356.99/101,920.48
  6. Step 6: Final answer
    x = 64,047.93

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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.