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Finding the Fourth Proportional to 686,902.04, 947,101.02 and 445,096.36

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Solution

The fourth proportional to 686,902.04, 947,101.02 and 445,096.36 is: 613,699.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,902.04 : 947,101.02 = 445,096.36 : x
  2. Step 2: Convert to fraction form
    686,902.04/947,101.02 = 445,096.36/x
  3. Step 3: Cross multiply
    686,902.04x = 947,101.02 × 445,096.36
  4. Step 4: Simplify right side
    686,902.04x = 421,551,216,554.29
  5. Step 5: Solve for x
    x = 421,551,216,554.29/686,902.04
  6. Step 6: Final answer
    x = 613,699.18

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.