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Finding the Fourth Proportional to 657,812.80, 986,719.20 and 574,868.80

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Solution

The fourth proportional to 657,812.80, 986,719.20 and 574,868.80 is: 862,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,812.80 : 986,719.20 = 574,868.80 : x
  2. Step 2: Convert to fraction form
    657,812.80/986,719.20 = 574,868.80/x
  3. Step 3: Cross multiply
    657,812.80x = 986,719.20 × 574,868.80
  4. Step 4: Simplify right side
    657,812.80x = 567,234,082,440.96
  5. Step 5: Solve for x
    x = 567,234,082,440.96/657,812.80
  6. Step 6: Final answer
    x = 862,303.20

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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.