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Finding the Fourth Proportional to 631,569.90, 947,354.85 and 365,193.30

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Solution

The fourth proportional to 631,569.90, 947,354.85 and 365,193.30 is: 547,789.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,569.90 : 947,354.85 = 365,193.30 : x
  2. Step 2: Convert to fraction form
    631,569.90/947,354.85 = 365,193.30/x
  3. Step 3: Cross multiply
    631,569.90x = 947,354.85 × 365,193.30
  4. Step 4: Simplify right side
    631,569.90x = 345,967,643,942.51
  5. Step 5: Solve for x
    x = 345,967,643,942.51/631,569.90
  6. Step 6: Final answer
    x = 547,789.95

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Half scale
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Double scale
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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.