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Finding the Fourth Proportional to 185,800.95, 256,404.96 and 100,917.81

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Solution

The fourth proportional to 185,800.95, 256,404.96 and 100,917.81 is: 139,266.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,800.95 : 256,404.96 = 100,917.81 : x
  2. Step 2: Convert to fraction form
    185,800.95/256,404.96 = 100,917.81/x
  3. Step 3: Cross multiply
    185,800.95x = 256,404.96 × 100,917.81
  4. Step 4: Simplify right side
    185,800.95x = 25,875,827,036.34
  5. Step 5: Solve for x
    x = 25,875,827,036.34/185,800.95
  6. Step 6: Final answer
    x = 139,266.39

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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.