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Finding the Fourth Proportional to 185,666.63, 256,219.34 and 100,783.08

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Solution

The fourth proportional to 185,666.63, 256,219.34 and 100,783.08 is: 139,080.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,666.63 : 256,219.34 = 100,783.08 : x
  2. Step 2: Convert to fraction form
    185,666.63/256,219.34 = 100,783.08/x
  3. Step 3: Cross multiply
    185,666.63x = 256,219.34 × 100,783.08
  4. Step 4: Simplify right side
    185,666.63x = 25,822,573,736.85
  5. Step 5: Solve for x
    x = 25,822,573,736.85/185,666.63
  6. Step 6: Final answer
    x = 139,080.32

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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.