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Finding the Fourth Proportional to 501,232.89, 691,637.67 and 286,386.87

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Solution

The fourth proportional to 501,232.89, 691,637.67 and 286,386.87 is: 395,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,232.89 : 691,637.67 = 286,386.87 : x
  2. Step 2: Convert to fraction form
    501,232.89/691,637.67 = 286,386.87/x
  3. Step 3: Cross multiply
    501,232.89x = 691,637.67 × 286,386.87
  4. Step 4: Simplify right side
    501,232.89x = 198,075,947,485.39
  5. Step 5: Solve for x
    x = 198,075,947,485.39/501,232.89
  6. Step 6: Final answer
    x = 395,177.47

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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.