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Finding the Fourth Proportional to 247,095.90, 340,998.26 and 139,666.28

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Solution

The fourth proportional to 247,095.90, 340,998.26 and 139,666.28 is: 192,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,095.90 : 340,998.26 = 139,666.28 : x
  2. Step 2: Convert to fraction form
    247,095.90/340,998.26 = 139,666.28/x
  3. Step 3: Cross multiply
    247,095.90x = 340,998.26 × 139,666.28
  4. Step 4: Simplify right side
    247,095.90x = 47,625,956,057.35
  5. Step 5: Solve for x
    x = 47,625,956,057.35/247,095.90
  6. Step 6: Final answer
    x = 192,742.80

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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.