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Finding the Fourth Proportional to 190,416, 262,664.64 and 118,761.60

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Solution

The fourth proportional to 190,416, 262,664.64 and 118,761.60 is: 163,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,416 : 262,664.64 = 118,761.60 : x
  2. Step 2: Convert to fraction form
    190,416/262,664.64 = 118,761.60/x
  3. Step 3: Cross multiply
    190,416x = 262,664.64 × 118,761.60
  4. Step 4: Simplify right side
    190,416x = 31,194,472,909.82
  5. Step 5: Solve for x
    x = 31,194,472,909.82/190,416
  6. Step 6: Final answer
    x = 163,822.75

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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.