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Finding the Fourth Proportional to 163,918.40, 245,440.20 and 163,918.40

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Solution

The fourth proportional to 163,918.40, 245,440.20 and 163,918.40 is: 245,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,918.40 : 245,440.20 = 163,918.40 : x
  2. Step 2: Convert to fraction form
    163,918.40/245,440.20 = 163,918.40/x
  3. Step 3: Cross multiply
    163,918.40x = 245,440.20 × 163,918.40
  4. Step 4: Simplify right side
    163,918.40x = 40,232,164,879.68
  5. Step 5: Solve for x
    x = 40,232,164,879.68/163,918.40
  6. Step 6: Final answer
    x = 245,440.20

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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.