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Finding the Fourth Proportional to 613,291.60, 846,341.12 and 345,019.60

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Solution

The fourth proportional to 613,291.60, 846,341.12 and 345,019.60 is: 476,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,291.60 : 846,341.12 = 345,019.60 : x
  2. Step 2: Convert to fraction form
    613,291.60/846,341.12 = 345,019.60/x
  3. Step 3: Cross multiply
    613,291.60x = 846,341.12 × 345,019.60
  4. Step 4: Simplify right side
    613,291.60x = 292,004,274,685.95
  5. Step 5: Solve for x
    x = 292,004,274,685.95/613,291.60
  6. Step 6: Final answer
    x = 476,126.32

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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.