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Finding the Fourth Proportional to 348,226.50, 480,303.63 and 319,636.92

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Solution

The fourth proportional to 348,226.50, 480,303.63 and 319,636.92 is: 440,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,226.50 : 480,303.63 = 319,636.92 : x
  2. Step 2: Convert to fraction form
    348,226.50/480,303.63 = 319,636.92/x
  3. Step 3: Cross multiply
    348,226.50x = 480,303.63 × 319,636.92
  4. Step 4: Simplify right side
    348,226.50x = 153,522,772,958.02
  5. Step 5: Solve for x
    x = 153,522,772,958.02/348,226.50
  6. Step 6: Final answer
    x = 440,870.45

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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.