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Finding the Fourth Proportional to 647,360.17, 893,410.22 and 357,028.52

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Solution

The fourth proportional to 647,360.17, 893,410.22 and 357,028.52 is: 492,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,360.17 : 893,410.22 = 357,028.52 : x
  2. Step 2: Convert to fraction form
    647,360.17/893,410.22 = 357,028.52/x
  3. Step 3: Cross multiply
    647,360.17x = 893,410.22 × 357,028.52
  4. Step 4: Simplify right side
    647,360.17x = 318,972,922,347.28
  5. Step 5: Solve for x
    x = 318,972,922,347.28/647,360.17
  6. Step 6: Final answer
    x = 492,728.68

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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.