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Finding the Fourth Proportional to 640,160.22, 883,430.37 and 353,686.89

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Solution

The fourth proportional to 640,160.22, 883,430.37 and 353,686.89 is: 488,093.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,160.22 : 883,430.37 = 353,686.89 : x
  2. Step 2: Convert to fraction form
    640,160.22/883,430.37 = 353,686.89/x
  3. Step 3: Cross multiply
    640,160.22x = 883,430.37 × 353,686.89
  4. Step 4: Simplify right side
    640,160.22x = 312,457,740,096.85
  5. Step 5: Solve for x
    x = 312,457,740,096.85/640,160.22
  6. Step 6: Final answer
    x = 488,093.03

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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.