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Finding the Fourth Proportional to 480,336.43, 662,955.69 and 316,705.09

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Solution

The fourth proportional to 480,336.43, 662,955.69 and 316,705.09 is: 437,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,336.43 : 662,955.69 = 316,705.09 : x
  2. Step 2: Convert to fraction form
    480,336.43/662,955.69 = 316,705.09/x
  3. Step 3: Cross multiply
    480,336.43x = 662,955.69 × 316,705.09
  4. Step 4: Simplify right side
    480,336.43x = 209,961,441,467.46
  5. Step 5: Solve for x
    x = 209,961,441,467.46/480,336.43
  6. Step 6: Final answer
    x = 437,113.30

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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.