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Finding the Fourth Proportional to 525,711.60, 788,679.72 and 193,287.60

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Solution

The fourth proportional to 525,711.60, 788,679.72 and 193,287.60 is: 289,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,711.60 : 788,679.72 = 193,287.60 : x
  2. Step 2: Convert to fraction form
    525,711.60/788,679.72 = 193,287.60/x
  3. Step 3: Cross multiply
    525,711.60x = 788,679.72 × 193,287.60
  4. Step 4: Simplify right side
    525,711.60x = 152,442,010,247.47
  5. Step 5: Solve for x
    x = 152,442,010,247.47/525,711.60
  6. Step 6: Final answer
    x = 289,972.70

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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.