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Finding the Fourth Proportional to 621,077.80, 857,158.74 and 345,463.48

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Solution

The fourth proportional to 621,077.80, 857,158.74 and 345,463.48 is: 476,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,077.80 : 857,158.74 = 345,463.48 : x
  2. Step 2: Convert to fraction form
    621,077.80/857,158.74 = 345,463.48/x
  3. Step 3: Cross multiply
    621,077.80x = 857,158.74 × 345,463.48
  4. Step 4: Simplify right side
    621,077.80x = 296,117,041,232.82
  5. Step 5: Solve for x
    x = 296,117,041,232.82/621,077.80
  6. Step 6: Final answer
    x = 476,779.30

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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.