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Finding the Fourth Proportional to 356,133.90, 534,001.16 and 243,940.80

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Solution

The fourth proportional to 356,133.90, 534,001.16 and 243,940.80 is: 365,774.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,133.90 : 534,001.16 = 243,940.80 : x
  2. Step 2: Convert to fraction form
    356,133.90/534,001.16 = 243,940.80/x
  3. Step 3: Cross multiply
    356,133.90x = 534,001.16 × 243,940.80
  4. Step 4: Simplify right side
    356,133.90x = 130,264,670,171.33
  5. Step 5: Solve for x
    x = 130,264,670,171.33/356,133.90
  6. Step 6: Final answer
    x = 365,774.42

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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.