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Finding the Fourth Proportional to 258,262.77, 356,411.76 and 143,543.70

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Solution

The fourth proportional to 258,262.77, 356,411.76 and 143,543.70 is: 198,095.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,262.77 : 356,411.76 = 143,543.70 : x
  2. Step 2: Convert to fraction form
    258,262.77/356,411.76 = 143,543.70/x
  3. Step 3: Cross multiply
    258,262.77x = 356,411.76 × 143,543.70
  4. Step 4: Simplify right side
    258,262.77x = 51,160,662,753.91
  5. Step 5: Solve for x
    x = 51,160,662,753.91/258,262.77
  6. Step 6: Final answer
    x = 198,095.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.