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Finding the Fourth Proportional to 621,106.02, 857,157.12 and 379,349.46

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Solution

The fourth proportional to 621,106.02, 857,157.12 and 379,349.46 is: 523,521.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,106.02 : 857,157.12 = 379,349.46 : x
  2. Step 2: Convert to fraction form
    621,106.02/857,157.12 = 379,349.46/x
  3. Step 3: Cross multiply
    621,106.02x = 857,157.12 × 379,349.46
  4. Step 4: Simplify right side
    621,106.02x = 325,162,090,607.16
  5. Step 5: Solve for x
    x = 325,162,090,607.16/621,106.02
  6. Step 6: Final answer
    x = 523,521.07

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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.