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Finding the Fourth Proportional to 612,693.60, 845,392.02 and 357,995.56

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Solution

The fourth proportional to 612,693.60, 845,392.02 and 357,995.56 is: 493,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,693.60 : 845,392.02 = 357,995.56 : x
  2. Step 2: Convert to fraction form
    612,693.60/845,392.02 = 357,995.56/x
  3. Step 3: Cross multiply
    612,693.60x = 845,392.02 × 357,995.56
  4. Step 4: Simplify right side
    612,693.60x = 302,646,589,619.43
  5. Step 5: Solve for x
    x = 302,646,589,619.43/612,693.60
  6. Step 6: Final answer
    x = 493,960.75

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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.