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Finding the Fourth Proportional to 185,783.40, 256,376.88 and 100,898.64

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Solution

The fourth proportional to 185,783.40, 256,376.88 and 100,898.64 is: 139,237.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,783.40 : 256,376.88 = 100,898.64 : x
  2. Step 2: Convert to fraction form
    185,783.40/256,376.88 = 100,898.64/x
  3. Step 3: Cross multiply
    185,783.40x = 256,376.88 × 100,898.64
  4. Step 4: Simplify right side
    185,783.40x = 25,868,078,519.44
  5. Step 5: Solve for x
    x = 25,868,078,519.44/185,783.40
  6. Step 6: Final answer
    x = 139,237.84

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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.