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Finding the Fourth Proportional to 72,548.40, 108,840.96 and 35,126.40

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Solution

The fourth proportional to 72,548.40, 108,840.96 and 35,126.40 is: 52,698.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,548.40 : 108,840.96 = 35,126.40 : x
  2. Step 2: Convert to fraction form
    72,548.40/108,840.96 = 35,126.40/x
  3. Step 3: Cross multiply
    72,548.40x = 108,840.96 × 35,126.40
  4. Step 4: Simplify right side
    72,548.40x = 3,823,191,097.34
  5. Step 5: Solve for x
    x = 3,823,191,097.34/72,548.40
  6. Step 6: Final answer
    x = 52,698.49

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1.5x scale

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.