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Finding the Fourth Proportional to 64,419.52, 88,816.64 and 41,718.40

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Solution

The fourth proportional to 64,419.52, 88,816.64 and 41,718.40 is: 57,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,419.52 : 88,816.64 = 41,718.40 : x
  2. Step 2: Convert to fraction form
    64,419.52/88,816.64 = 41,718.40/x
  3. Step 3: Cross multiply
    64,419.52x = 88,816.64 × 41,718.40
  4. Step 4: Simplify right side
    64,419.52x = 3,705,288,114.18
  5. Step 5: Solve for x
    x = 3,705,288,114.18/64,419.52
  6. Step 6: Final answer
    x = 57,518.10

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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.