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Finding the Fourth Proportional to 619,363.40, 929,045.10 and 198,681.80

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Solution

The fourth proportional to 619,363.40, 929,045.10 and 198,681.80 is: 298,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,363.40 : 929,045.10 = 198,681.80 : x
  2. Step 2: Convert to fraction form
    619,363.40/929,045.10 = 198,681.80/x
  3. Step 3: Cross multiply
    619,363.40x = 929,045.10 × 198,681.80
  4. Step 4: Simplify right side
    619,363.40x = 184,584,352,749.18
  5. Step 5: Solve for x
    x = 184,584,352,749.18/619,363.40
  6. Step 6: Final answer
    x = 298,022.70

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Half scale
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Double scale
Find fourth proportional to 619,364.40, 929,046.60 and 198,682.80
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.