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Finding the Fourth Proportional to 708,293.73, 977,416.86 and 385,996.84

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Solution

The fourth proportional to 708,293.73, 977,416.86 and 385,996.84 is: 532,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,293.73 : 977,416.86 = 385,996.84 : x
  2. Step 2: Convert to fraction form
    708,293.73/977,416.86 = 385,996.84/x
  3. Step 3: Cross multiply
    708,293.73x = 977,416.86 × 385,996.84
  4. Step 4: Simplify right side
    708,293.73x = 377,279,819,322.72
  5. Step 5: Solve for x
    x = 377,279,819,322.72/708,293.73
  6. Step 6: Final answer
    x = 532,660.11

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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.