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Finding the Fourth Proportional to 807,561.51, 1,114,420.32 and 445,019.01

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Solution

The fourth proportional to 807,561.51, 1,114,420.32 and 445,019.01 is: 614,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,561.51 : 1,114,420.32 = 445,019.01 : x
  2. Step 2: Convert to fraction form
    807,561.51/1,114,420.32 = 445,019.01/x
  3. Step 3: Cross multiply
    807,561.51x = 1,114,420.32 × 445,019.01
  4. Step 4: Simplify right side
    807,561.51x = 495,938,227,530.28
  5. Step 5: Solve for x
    x = 495,938,227,530.28/807,561.51
  6. Step 6: Final answer
    x = 614,118.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.