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Finding the Fourth Proportional to 501,253.58, 691,766.55 and 286,389.05

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Solution

The fourth proportional to 501,253.58, 691,766.55 and 286,389.05 is: 395,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,253.58 : 691,766.55 = 286,389.05 : x
  2. Step 2: Convert to fraction form
    501,253.58/691,766.55 = 286,389.05/x
  3. Step 3: Cross multiply
    501,253.58x = 691,766.55 × 286,389.05
  4. Step 4: Simplify right side
    501,253.58x = 198,114,361,617.45
  5. Step 5: Solve for x
    x = 198,114,361,617.45/501,253.58
  6. Step 6: Final answer
    x = 395,237.80

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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.