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Finding the Fourth Proportional to 525,486.02, 719,918.45 and 505,805.85

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Solution

The fourth proportional to 525,486.02, 719,918.45 and 505,805.85 is: 692,956.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,486.02 : 719,918.45 = 505,805.85 : x
  2. Step 2: Convert to fraction form
    525,486.02/719,918.45 = 505,805.85/x
  3. Step 3: Cross multiply
    525,486.02x = 719,918.45 × 505,805.85
  4. Step 4: Simplify right side
    525,486.02x = 364,138,962,900.68
  5. Step 5: Solve for x
    x = 364,138,962,900.68/525,486.02
  6. Step 6: Final answer
    x = 692,956.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.