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Finding the Fourth Proportional to 525,715.60, 788,685.72 and 193,291.60

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Solution

The fourth proportional to 525,715.60, 788,685.72 and 193,291.60 is: 289,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,715.60 : 788,685.72 = 193,291.60 : x
  2. Step 2: Convert to fraction form
    525,715.60/788,685.72 = 193,291.60/x
  3. Step 3: Cross multiply
    525,715.60x = 788,685.72 × 193,291.60
  4. Step 4: Simplify right side
    525,715.60x = 152,446,324,715.95
  5. Step 5: Solve for x
    x = 152,446,324,715.95/525,715.60
  6. Step 6: Final answer
    x = 289,978.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.