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Finding the Fourth Proportional to 261,534.76, 360,944.54 and 154,139.39

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Solution

The fourth proportional to 261,534.76, 360,944.54 and 154,139.39 is: 212,728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,534.76 : 360,944.54 = 154,139.39 : x
  2. Step 2: Convert to fraction form
    261,534.76/360,944.54 = 154,139.39/x
  3. Step 3: Cross multiply
    261,534.76x = 360,944.54 × 154,139.39
  4. Step 4: Simplify right side
    261,534.76x = 55,635,771,219.43
  5. Step 5: Solve for x
    x = 55,635,771,219.43/261,534.76
  6. Step 6: Final answer
    x = 212,728.02

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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.