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Finding the Fourth Proportional to 183,698.40, 253,515.15 and 122,339.40

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Solution

The fourth proportional to 183,698.40, 253,515.15 and 122,339.40 is: 168,835.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,698.40 : 253,515.15 = 122,339.40 : x
  2. Step 2: Convert to fraction form
    183,698.40/253,515.15 = 122,339.40/x
  3. Step 3: Cross multiply
    183,698.40x = 253,515.15 × 122,339.40
  4. Step 4: Simplify right side
    183,698.40x = 31,014,891,341.91
  5. Step 5: Solve for x
    x = 31,014,891,341.91/183,698.40
  6. Step 6: Final answer
    x = 168,835.94

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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.