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Finding the Fourth Proportional to 72,975.90, 109,412.94 and 37,368.03

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Solution

The fourth proportional to 72,975.90, 109,412.94 and 37,368.03 is: 56,025.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,975.90 : 109,412.94 = 37,368.03 : x
  2. Step 2: Convert to fraction form
    72,975.90/109,412.94 = 37,368.03/x
  3. Step 3: Cross multiply
    72,975.90x = 109,412.94 × 37,368.03
  4. Step 4: Simplify right side
    72,975.90x = 4,088,546,024.31
  5. Step 5: Solve for x
    x = 4,088,546,024.31/72,975.90
  6. Step 6: Final answer
    x = 56,025.98

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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.