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Finding the Fourth Proportional to 612,904.21, 846,224.48 and 383,554.22

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Solution

The fourth proportional to 612,904.21, 846,224.48 and 383,554.22 is: 529,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,904.21 : 846,224.48 = 383,554.22 : x
  2. Step 2: Convert to fraction form
    612,904.21/846,224.48 = 383,554.22/x
  3. Step 3: Cross multiply
    612,904.21x = 846,224.48 × 383,554.22
  4. Step 4: Simplify right side
    612,904.21x = 324,572,967,099.07
  5. Step 5: Solve for x
    x = 324,572,967,099.07/612,904.21
  6. Step 6: Final answer
    x = 529,565.57

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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.