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Finding the Fourth Proportional to 190,549.92, 285,813.36 and 85,340.64

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Solution

The fourth proportional to 190,549.92, 285,813.36 and 85,340.64 is: 128,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,549.92 : 285,813.36 = 85,340.64 : x
  2. Step 2: Convert to fraction form
    190,549.92/285,813.36 = 85,340.64/x
  3. Step 3: Cross multiply
    190,549.92x = 285,813.36 × 85,340.64
  4. Step 4: Simplify right side
    190,549.92x = 24,391,495,062.95
  5. Step 5: Solve for x
    x = 24,391,495,062.95/190,549.92
  6. Step 6: Final answer
    x = 128,005.80

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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.