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Finding the Fourth Proportional to 628,005.28, 866,208.18 and 413,076.64

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Solution

The fourth proportional to 628,005.28, 866,208.18 and 413,076.64 is: 569,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,005.28 : 866,208.18 = 413,076.64 : x
  2. Step 2: Convert to fraction form
    628,005.28/866,208.18 = 413,076.64/x
  3. Step 3: Cross multiply
    628,005.28x = 866,208.18 × 413,076.64
  4. Step 4: Simplify right side
    628,005.28x = 357,810,364,534.92
  5. Step 5: Solve for x
    x = 357,810,364,534.92/628,005.28
  6. Step 6: Final answer
    x = 569,756.94

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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.