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Finding the Fourth Proportional to 714,236.34, 985,661.01 and 391,927.62

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Solution

The fourth proportional to 714,236.34, 985,661.01 and 391,927.62 is: 540,868.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,236.34 : 985,661.01 = 391,927.62 : x
  2. Step 2: Convert to fraction form
    714,236.34/985,661.01 = 391,927.62/x
  3. Step 3: Cross multiply
    714,236.34x = 985,661.01 × 391,927.62
  4. Step 4: Simplify right side
    714,236.34x = 386,307,773,776.10
  5. Step 5: Solve for x
    x = 386,307,773,776.10/714,236.34
  6. Step 6: Final answer
    x = 540,868.27

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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.