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Finding the Fourth Proportional to 282,106.90, 389,307.99 and 154,783.41

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Solution

The fourth proportional to 282,106.90, 389,307.99 and 154,783.41 is: 213,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,106.90 : 389,307.99 = 154,783.41 : x
  2. Step 2: Convert to fraction form
    282,106.90/389,307.99 = 154,783.41/x
  3. Step 3: Cross multiply
    282,106.90x = 389,307.99 × 154,783.41
  4. Step 4: Simplify right side
    282,106.90x = 60,258,418,232.45
  5. Step 5: Solve for x
    x = 60,258,418,232.45/282,106.90
  6. Step 6: Final answer
    x = 213,601.36

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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.