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Finding the Fourth Proportional to 611,317.90, 915,783.96 and 400,316.14

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Solution

The fourth proportional to 611,317.90, 915,783.96 and 400,316.14 is: 599,693.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,317.90 : 915,783.96 = 400,316.14 : x
  2. Step 2: Convert to fraction form
    611,317.90/915,783.96 = 400,316.14/x
  3. Step 3: Cross multiply
    611,317.90x = 915,783.96 × 400,316.14
  4. Step 4: Simplify right side
    611,317.90x = 366,603,099,941.11
  5. Step 5: Solve for x
    x = 366,603,099,941.11/611,317.90
  6. Step 6: Final answer
    x = 599,693.06

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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.