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Finding the Fourth Proportional to 373,082.40, 559,623.60 and 315,345.60

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Solution

The fourth proportional to 373,082.40, 559,623.60 and 315,345.60 is: 473,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,082.40 : 559,623.60 = 315,345.60 : x
  2. Step 2: Convert to fraction form
    373,082.40/559,623.60 = 315,345.60/x
  3. Step 3: Cross multiply
    373,082.40x = 559,623.60 × 315,345.60
  4. Step 4: Simplify right side
    373,082.40x = 176,474,839,916.16
  5. Step 5: Solve for x
    x = 176,474,839,916.16/373,082.40
  6. Step 6: Final answer
    x = 473,018.40

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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.