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Finding the Fourth Proportional to 266,431.52, 399,804.90 and 98,070.08

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Solution

The fourth proportional to 266,431.52, 399,804.90 and 98,070.08 is: 147,163.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,431.52 : 399,804.90 = 98,070.08 : x
  2. Step 2: Convert to fraction form
    266,431.52/399,804.90 = 98,070.08/x
  3. Step 3: Cross multiply
    266,431.52x = 399,804.90 × 98,070.08
  4. Step 4: Simplify right side
    266,431.52x = 39,208,898,527.39
  5. Step 5: Solve for x
    x = 39,208,898,527.39/266,431.52
  6. Step 6: Final answer
    x = 147,163.14

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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.