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Finding the Fourth Proportional to 653,321.53, 901,681.37 and 398,820.34

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Solution

The fourth proportional to 653,321.53, 901,681.37 and 398,820.34 is: 550,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,321.53 : 901,681.37 = 398,820.34 : x
  2. Step 2: Convert to fraction form
    653,321.53/901,681.37 = 398,820.34/x
  3. Step 3: Cross multiply
    653,321.53x = 901,681.37 × 398,820.34
  4. Step 4: Simplify right side
    653,321.53x = 359,608,870,555.07
  5. Step 5: Solve for x
    x = 359,608,870,555.07/653,321.53
  6. Step 6: Final answer
    x = 550,431.68

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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.