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Finding the Fourth Proportional to 525,859.40, 788,789.10 and 188,899.40

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Solution

The fourth proportional to 525,859.40, 788,789.10 and 188,899.40 is: 283,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,859.40 : 788,789.10 = 188,899.40 : x
  2. Step 2: Convert to fraction form
    525,859.40/788,789.10 = 188,899.40/x
  3. Step 3: Cross multiply
    525,859.40x = 788,789.10 × 188,899.40
  4. Step 4: Simplify right side
    525,859.40x = 149,001,787,716.54
  5. Step 5: Solve for x
    x = 149,001,787,716.54/525,859.40
  6. Step 6: Final answer
    x = 283,349.10

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Half scale
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Double scale
Find fourth proportional to 525,860.40, 788,790.60 and 188,900.40
Similar ratio
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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.