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Finding the Fourth Proportional to 996,980.90, 1,495,471.35 and 365,812.70

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Solution

The fourth proportional to 996,980.90, 1,495,471.35 and 365,812.70 is: 548,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,980.90 : 1,495,471.35 = 365,812.70 : x
  2. Step 2: Convert to fraction form
    996,980.90/1,495,471.35 = 365,812.70/x
  3. Step 3: Cross multiply
    996,980.90x = 1,495,471.35 × 365,812.70
  4. Step 4: Simplify right side
    996,980.90x = 547,062,412,316.15
  5. Step 5: Solve for x
    x = 547,062,412,316.15/996,980.90
  6. Step 6: Final answer
    x = 548,719.05

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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.