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Finding the Fourth Proportional to 296,669.80, 445,047.90 and 96,999.40

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Solution

The fourth proportional to 296,669.80, 445,047.90 and 96,999.40 is: 145,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,669.80 : 445,047.90 = 96,999.40 : x
  2. Step 2: Convert to fraction form
    296,669.80/445,047.90 = 96,999.40/x
  3. Step 3: Cross multiply
    296,669.80x = 445,047.90 × 96,999.40
  4. Step 4: Simplify right side
    296,669.80x = 43,169,379,271.26
  5. Step 5: Solve for x
    x = 43,169,379,271.26/296,669.80
  6. Step 6: Final answer
    x = 145,513.22

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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.