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Finding the Fourth Proportional to 498,419.06, 687,809.52 and 283,554.54

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Solution

The fourth proportional to 498,419.06, 687,809.52 and 283,554.54 is: 391,300.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,419.06 : 687,809.52 = 283,554.54 : x
  2. Step 2: Convert to fraction form
    498,419.06/687,809.52 = 283,554.54/x
  3. Step 3: Cross multiply
    498,419.06x = 687,809.52 × 283,554.54
  4. Step 4: Simplify right side
    498,419.06x = 195,031,512,051.22
  5. Step 5: Solve for x
    x = 195,031,512,051.22/498,419.06
  6. Step 6: Final answer
    x = 391,300.27

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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.