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Finding the Fourth Proportional to 343,485.60, 515,228.40 and 153,945.60

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Solution

The fourth proportional to 343,485.60, 515,228.40 and 153,945.60 is: 230,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,485.60 : 515,228.40 = 153,945.60 : x
  2. Step 2: Convert to fraction form
    343,485.60/515,228.40 = 153,945.60/x
  3. Step 3: Cross multiply
    343,485.60x = 515,228.40 × 153,945.60
  4. Step 4: Simplify right side
    343,485.60x = 79,317,145,175.04
  5. Step 5: Solve for x
    x = 79,317,145,175.04/343,485.60
  6. Step 6: Final answer
    x = 230,918.40

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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.