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Finding the Fourth Proportional to 701,654.38, 968,285.74 and 391,570.18

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Solution

The fourth proportional to 701,654.38, 968,285.74 and 391,570.18 is: 540,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,654.38 : 968,285.74 = 391,570.18 : x
  2. Step 2: Convert to fraction form
    701,654.38/968,285.74 = 391,570.18/x
  3. Step 3: Cross multiply
    701,654.38x = 968,285.74 × 391,570.18
  4. Step 4: Simplify right side
    701,654.38x = 379,151,821,503.23
  5. Step 5: Solve for x
    x = 379,151,821,503.23/701,654.38
  6. Step 6: Final answer
    x = 540,368.35

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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.