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Finding the Fourth Proportional to 415,554.33, 620,326.54 and 365,108.95

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Solution

The fourth proportional to 415,554.33, 620,326.54 and 365,108.95 is: 545,023.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,554.33 : 620,326.54 = 365,108.95 : x
  2. Step 2: Convert to fraction form
    415,554.33/620,326.54 = 365,108.95/x
  3. Step 3: Cross multiply
    415,554.33x = 620,326.54 × 365,108.95
  4. Step 4: Simplify right side
    415,554.33x = 226,486,766,749.36
  5. Step 5: Solve for x
    x = 226,486,766,749.36/415,554.33
  6. Step 6: Final answer
    x = 545,023.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.