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Finding the Fourth Proportional to 72,945.63, 109,421.87 and 35,461.01

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Solution

The fourth proportional to 72,945.63, 109,421.87 and 35,461.01 is: 53,193.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,945.63 : 109,421.87 = 35,461.01 : x
  2. Step 2: Convert to fraction form
    72,945.63/109,421.87 = 35,461.01/x
  3. Step 3: Cross multiply
    72,945.63x = 109,421.87 × 35,461.01
  4. Step 4: Simplify right side
    72,945.63x = 3,880,210,026.29
  5. Step 5: Solve for x
    x = 3,880,210,026.29/72,945.63
  6. Step 6: Final answer
    x = 53,193.18

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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.