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Finding the Fourth Proportional to 185,699.70, 256,264.80 and 100,816.74

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Solution

The fourth proportional to 185,699.70, 256,264.80 and 100,816.74 is: 139,126.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,699.70 : 256,264.80 = 100,816.74 : x
  2. Step 2: Convert to fraction form
    185,699.70/256,264.80 = 100,816.74/x
  3. Step 3: Cross multiply
    185,699.70x = 256,264.80 × 100,816.74
  4. Step 4: Simplify right side
    185,699.70x = 25,835,781,712.75
  5. Step 5: Solve for x
    x = 25,835,781,712.75/185,699.70
  6. Step 6: Final answer
    x = 139,126.67

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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.