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Finding the Fourth Proportional to 711,792.30, 982,273.14 and 389,502.30

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Solution

The fourth proportional to 711,792.30, 982,273.14 and 389,502.30 is: 537,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,792.30 : 982,273.14 = 389,502.30 : x
  2. Step 2: Convert to fraction form
    711,792.30/982,273.14 = 389,502.30/x
  3. Step 3: Cross multiply
    711,792.30x = 982,273.14 × 389,502.30
  4. Step 4: Simplify right side
    711,792.30x = 382,597,647,258.22
  5. Step 5: Solve for x
    x = 382,597,647,258.22/711,792.30
  6. Step 6: Final answer
    x = 537,513.05

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Double scale
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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.