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Finding the Fourth Proportional to 717,091.79, 989,568.90 and 411,349.19

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Solution

The fourth proportional to 717,091.79, 989,568.90 and 411,349.19 is: 567,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,091.79 : 989,568.90 = 411,349.19 : x
  2. Step 2: Convert to fraction form
    717,091.79/989,568.90 = 411,349.19/x
  3. Step 3: Cross multiply
    717,091.79x = 989,568.90 × 411,349.19
  4. Step 4: Simplify right side
    717,091.79x = 407,058,360,516.35
  5. Step 5: Solve for x
    x = 407,058,360,516.35/717,091.79
  6. Step 6: Final answer
    x = 567,651.69

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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.