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Finding the Fourth Proportional to 72,602.64, 108,875.88 and 25,203.60

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Solution

The fourth proportional to 72,602.64, 108,875.88 and 25,203.60 is: 37,795.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,602.64 : 108,875.88 = 25,203.60 : x
  2. Step 2: Convert to fraction form
    72,602.64/108,875.88 = 25,203.60/x
  3. Step 3: Cross multiply
    72,602.64x = 108,875.88 × 25,203.60
  4. Step 4: Simplify right side
    72,602.64x = 2,744,064,129.17
  5. Step 5: Solve for x
    x = 2,744,064,129.17/72,602.64
  6. Step 6: Final answer
    x = 37,795.65

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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.