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Finding the Fourth Proportional to 64,818.40, 97,112.40 and 55,602.40

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Solution

The fourth proportional to 64,818.40, 97,112.40 and 55,602.40 is: 83,304.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,818.40 : 97,112.40 = 55,602.40 : x
  2. Step 2: Convert to fraction form
    64,818.40/97,112.40 = 55,602.40/x
  3. Step 3: Cross multiply
    64,818.40x = 97,112.40 × 55,602.40
  4. Step 4: Simplify right side
    64,818.40x = 5,399,682,509.76
  5. Step 5: Solve for x
    x = 5,399,682,509.76/64,818.40
  6. Step 6: Final answer
    x = 83,304.78

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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.