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Finding the Fourth Proportional to 656,457.78, 984,686.67 and 157,821.78

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Solution

The fourth proportional to 656,457.78, 984,686.67 and 157,821.78 is: 236,732.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,457.78 : 984,686.67 = 157,821.78 : x
  2. Step 2: Convert to fraction form
    656,457.78/984,686.67 = 157,821.78/x
  3. Step 3: Cross multiply
    656,457.78x = 984,686.67 × 157,821.78
  4. Step 4: Simplify right side
    656,457.78x = 155,405,003,001.67
  5. Step 5: Solve for x
    x = 155,405,003,001.67/656,457.78
  6. Step 6: Final answer
    x = 236,732.67

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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.