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Finding the Fourth Proportional to 419,036.88, 577,868.88 and 281,526.48

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Solution

The fourth proportional to 419,036.88, 577,868.88 and 281,526.48 is: 388,236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,036.88 : 577,868.88 = 281,526.48 : x
  2. Step 2: Convert to fraction form
    419,036.88/577,868.88 = 281,526.48/x
  3. Step 3: Cross multiply
    419,036.88x = 577,868.88 × 281,526.48
  4. Step 4: Simplify right side
    419,036.88x = 162,685,391,687.94
  5. Step 5: Solve for x
    x = 162,685,391,687.94/419,036.88
  6. Step 6: Final answer
    x = 388,236.45

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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.