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Finding the Fourth Proportional to 532,085.60, 798,128.40 and 511,090.40

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Solution

The fourth proportional to 532,085.60, 798,128.40 and 511,090.40 is: 766,635.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,085.60 : 798,128.40 = 511,090.40 : x
  2. Step 2: Convert to fraction form
    532,085.60/798,128.40 = 511,090.40/x
  3. Step 3: Cross multiply
    532,085.60x = 798,128.40 × 511,090.40
  4. Step 4: Simplify right side
    532,085.60x = 407,915,763,207.36
  5. Step 5: Solve for x
    x = 407,915,763,207.36/532,085.60
  6. Step 6: Final answer
    x = 766,635.60

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Double scale
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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.