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Finding the Fourth Proportional to 72,316.32, 108,551.16 and 64,050

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Solution

The fourth proportional to 72,316.32, 108,551.16 and 64,050 is: 96,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,316.32 : 108,551.16 = 64,050 : x
  2. Step 2: Convert to fraction form
    72,316.32/108,551.16 = 64,050/x
  3. Step 3: Cross multiply
    72,316.32x = 108,551.16 × 64,050
  4. Step 4: Simplify right side
    72,316.32x = 6,952,701,798
  5. Step 5: Solve for x
    x = 6,952,701,798/72,316.32
  6. Step 6: Final answer
    x = 96,142.91

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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.