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Finding the Fourth Proportional to 662,658.30, 993,987.45 and 557,682.30

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Solution

The fourth proportional to 662,658.30, 993,987.45 and 557,682.30 is: 836,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,658.30 : 993,987.45 = 557,682.30 : x
  2. Step 2: Convert to fraction form
    662,658.30/993,987.45 = 557,682.30/x
  3. Step 3: Cross multiply
    662,658.30x = 993,987.45 × 557,682.30
  4. Step 4: Simplify right side
    662,658.30x = 554,329,207,287.14
  5. Step 5: Solve for x
    x = 554,329,207,287.14/662,658.30
  6. Step 6: Final answer
    x = 836,523.45

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Half scale
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Double scale
Find fourth proportional to 662,659.30, 993,988.95 and 557,683.30
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.