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Finding the Fourth Proportional to 303,412.10, 455,008.80 and 153,602.60

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Solution

The fourth proportional to 303,412.10, 455,008.80 and 153,602.60 is: 230,348.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,412.10 : 455,008.80 = 153,602.60 : x
  2. Step 2: Convert to fraction form
    303,412.10/455,008.80 = 153,602.60/x
  3. Step 3: Cross multiply
    303,412.10x = 455,008.80 × 153,602.60
  4. Step 4: Simplify right side
    303,412.10x = 69,890,534,702.88
  5. Step 5: Solve for x
    x = 69,890,534,702.88/303,412.10
  6. Step 6: Final answer
    x = 230,348.54

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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.