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Finding the Fourth Proportional to 355,283.80, 532,472.10 and 144,683.80

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Solution

The fourth proportional to 355,283.80, 532,472.10 and 144,683.80 is: 216,840.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,283.80 : 532,472.10 = 144,683.80 : x
  2. Step 2: Convert to fraction form
    355,283.80/532,472.10 = 144,683.80/x
  3. Step 3: Cross multiply
    355,283.80x = 532,472.10 × 144,683.80
  4. Step 4: Simplify right side
    355,283.80x = 77,040,086,821.98
  5. Step 5: Solve for x
    x = 77,040,086,821.98/355,283.80
  6. Step 6: Final answer
    x = 216,840.98

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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.