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Finding the Fourth Proportional to 585,008.60, 877,512.90 and 407,715.80

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Solution

The fourth proportional to 585,008.60, 877,512.90 and 407,715.80 is: 611,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,008.60 : 877,512.90 = 407,715.80 : x
  2. Step 2: Convert to fraction form
    585,008.60/877,512.90 = 407,715.80/x
  3. Step 3: Cross multiply
    585,008.60x = 877,512.90 × 407,715.80
  4. Step 4: Simplify right side
    585,008.60x = 357,775,874,033.82
  5. Step 5: Solve for x
    x = 357,775,874,033.82/585,008.60
  6. Step 6: Final answer
    x = 611,573.70

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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.