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Finding the Fourth Proportional to 555,784.40, 766,982.99 and 301,135.59

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Solution

The fourth proportional to 555,784.40, 766,982.99 and 301,135.59 is: 415,567.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,784.40 : 766,982.99 = 301,135.59 : x
  2. Step 2: Convert to fraction form
    555,784.40/766,982.99 = 301,135.59/x
  3. Step 3: Cross multiply
    555,784.40x = 766,982.99 × 301,135.59
  4. Step 4: Simplify right side
    555,784.40x = 230,965,875,966.45
  5. Step 5: Solve for x
    x = 230,965,875,966.45/555,784.40
  6. Step 6: Final answer
    x = 415,567.39

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Half scale
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Double scale
Find fourth proportional to 555,785.40, 766,984.37 and 301,136.59
Similar ratio
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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.