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Finding the Fourth Proportional to 630,185.47, 945,698.55 and 326,859.19

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Solution

The fourth proportional to 630,185.47, 945,698.55 and 326,859.19 is: 490,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,185.47 : 945,698.55 = 326,859.19 : x
  2. Step 2: Convert to fraction form
    630,185.47/945,698.55 = 326,859.19/x
  3. Step 3: Cross multiply
    630,185.47x = 945,698.55 × 326,859.19
  4. Step 4: Simplify right side
    630,185.47x = 309,110,262,037.18
  5. Step 5: Solve for x
    x = 309,110,262,037.18/630,185.47
  6. Step 6: Final answer
    x = 490,506.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.