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Finding the Fourth Proportional to 621,807.10, 858,093.75 and 353,535.10

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Solution

The fourth proportional to 621,807.10, 858,093.75 and 353,535.10 is: 487,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,807.10 : 858,093.75 = 353,535.10 : x
  2. Step 2: Convert to fraction form
    621,807.10/858,093.75 = 353,535.10/x
  3. Step 3: Cross multiply
    621,807.10x = 858,093.75 × 353,535.10
  4. Step 4: Simplify right side
    621,807.10x = 303,366,259,715.63
  5. Step 5: Solve for x
    x = 303,366,259,715.63/621,807.10
  6. Step 6: Final answer
    x = 487,878.41

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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.