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Finding the Fourth Proportional to 639,050.40, 881,874.81 and 352,570.41

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Solution

The fourth proportional to 639,050.40, 881,874.81 and 352,570.41 is: 486,539.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,050.40 : 881,874.81 = 352,570.41 : x
  2. Step 2: Convert to fraction form
    639,050.40/881,874.81 = 352,570.41/x
  3. Step 3: Cross multiply
    639,050.40x = 881,874.81 × 352,570.41
  4. Step 4: Simplify right side
    639,050.40x = 310,922,963,330.37
  5. Step 5: Solve for x
    x = 310,922,963,330.37/639,050.40
  6. Step 6: Final answer
    x = 486,539.03

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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.