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Finding the Fourth Proportional to 330,428.70, 495,643.05 and 237,116.70

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Solution

The fourth proportional to 330,428.70, 495,643.05 and 237,116.70 is: 355,675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,428.70 : 495,643.05 = 237,116.70 : x
  2. Step 2: Convert to fraction form
    330,428.70/495,643.05 = 237,116.70/x
  3. Step 3: Cross multiply
    330,428.70x = 495,643.05 × 237,116.70
  4. Step 4: Simplify right side
    330,428.70x = 117,525,244,393.94
  5. Step 5: Solve for x
    x = 117,525,244,393.94/330,428.70
  6. Step 6: Final answer
    x = 355,675.05

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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.