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Finding the Fourth Proportional to 450,257.78, 621,353.89 and 243,526.41

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Solution

The fourth proportional to 450,257.78, 621,353.89 and 243,526.41 is: 336,065.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,257.78 : 621,353.89 = 243,526.41 : x
  2. Step 2: Convert to fraction form
    450,257.78/621,353.89 = 243,526.41/x
  3. Step 3: Cross multiply
    450,257.78x = 621,353.89 × 243,526.41
  4. Step 4: Simplify right side
    450,257.78x = 151,316,078,047.58
  5. Step 5: Solve for x
    x = 151,316,078,047.58/450,257.78
  6. Step 6: Final answer
    x = 336,065.43

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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.