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Finding the Fourth Proportional to 382,911.91, 528,563.02 and 301,026.53

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Solution

The fourth proportional to 382,911.91, 528,563.02 and 301,026.53 is: 415,530.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,911.91 : 528,563.02 = 301,026.53 : x
  2. Step 2: Convert to fraction form
    382,911.91/528,563.02 = 301,026.53/x
  3. Step 3: Cross multiply
    382,911.91x = 528,563.02 × 301,026.53
  4. Step 4: Simplify right side
    382,911.91x = 159,111,489,957.02
  5. Step 5: Solve for x
    x = 159,111,489,957.02/382,911.91
  6. Step 6: Final answer
    x = 415,530.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.