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Finding the Fourth Proportional to 566,356.05, 781,548.35 and 311,708.25

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Solution

The fourth proportional to 566,356.05, 781,548.35 and 311,708.25 is: 430,144.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,356.05 : 781,548.35 = 311,708.25 : x
  2. Step 2: Convert to fraction form
    566,356.05/781,548.35 = 311,708.25/x
  3. Step 3: Cross multiply
    566,356.05x = 781,548.35 × 311,708.25
  4. Step 4: Simplify right side
    566,356.05x = 243,615,066,910.35
  5. Step 5: Solve for x
    x = 243,615,066,910.35/566,356.05
  6. Step 6: Final answer
    x = 430,144.72

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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.