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Finding the Fourth Proportional to 266,561.73, 399,702.19 and 98,038.53

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Solution

The fourth proportional to 266,561.73, 399,702.19 and 98,038.53 is: 147,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,561.73 : 399,702.19 = 98,038.53 : x
  2. Step 2: Convert to fraction form
    266,561.73/399,702.19 = 98,038.53/x
  3. Step 3: Cross multiply
    266,561.73x = 399,702.19 × 98,038.53
  4. Step 4: Simplify right side
    266,561.73x = 39,186,212,901.77
  5. Step 5: Solve for x
    x = 39,186,212,901.77/266,561.73
  6. Step 6: Final answer
    x = 147,006.15

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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.