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Finding the Fourth Proportional to 474,685.12, 655,040.08 and 259,783.60

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Solution

The fourth proportional to 474,685.12, 655,040.08 and 259,783.60 is: 358,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,685.12 : 655,040.08 = 259,783.60 : x
  2. Step 2: Convert to fraction form
    474,685.12/655,040.08 = 259,783.60/x
  3. Step 3: Cross multiply
    474,685.12x = 655,040.08 × 259,783.60
  4. Step 4: Simplify right side
    474,685.12x = 170,168,670,126.69
  5. Step 5: Solve for x
    x = 170,168,670,126.69/474,685.12
  6. Step 6: Final answer
    x = 358,487.48

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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.