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Finding the Fourth Proportional to 190,455.46, 285,702.64 and 65,780.26

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Solution

The fourth proportional to 190,455.46, 285,702.64 and 65,780.26 is: 98,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,455.46 : 285,702.64 = 65,780.26 : x
  2. Step 2: Convert to fraction form
    190,455.46/285,702.64 = 65,780.26/x
  3. Step 3: Cross multiply
    190,455.46x = 285,702.64 × 65,780.26
  4. Step 4: Simplify right side
    190,455.46x = 18,793,593,941.89
  5. Step 5: Solve for x
    x = 18,793,593,941.89/190,455.46
  6. Step 6: Final answer
    x = 98,677.11

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1.5x scale

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.