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Finding the Fourth Proportional to 878,881.41, 1,212,889.01 and 496,885.41

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Solution

The fourth proportional to 878,881.41, 1,212,889.01 and 496,885.41 is: 685,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,881.41 : 1,212,889.01 = 496,885.41 : x
  2. Step 2: Convert to fraction form
    878,881.41/1,212,889.01 = 496,885.41/x
  3. Step 3: Cross multiply
    878,881.41x = 1,212,889.01 × 496,885.41
  4. Step 4: Simplify right side
    878,881.41x = 602,666,850,533.92
  5. Step 5: Solve for x
    x = 602,666,850,533.92/878,881.41
  6. Step 6: Final answer
    x = 685,720.33

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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.