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Finding the Fourth Proportional to 585,140.40, 877,710.60 and 427,676.40

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Solution

The fourth proportional to 585,140.40, 877,710.60 and 427,676.40 is: 641,514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,140.40 : 877,710.60 = 427,676.40 : x
  2. Step 2: Convert to fraction form
    585,140.40/877,710.60 = 427,676.40/x
  3. Step 3: Cross multiply
    585,140.40x = 877,710.60 × 427,676.40
  4. Step 4: Simplify right side
    585,140.40x = 375,376,109,649.84
  5. Step 5: Solve for x
    x = 375,376,109,649.84/585,140.40
  6. Step 6: Final answer
    x = 641,514.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.