Home / 154,641,681.56-213,399,781.26-85,022,920.28

Finding the Fourth Proportional to 154,641,681.56, 213,399,781.26 and 85,022,920.28

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Solution

The fourth proportional to 154,641,681.56, 213,399,781.26 and 85,022,920.28 is: 117,328,474.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,641,681.56 : 213,399,781.26 = 85,022,920.28 : x
  2. Step 2: Convert to fraction form
    154,641,681.56/213,399,781.26 = 85,022,920.28/x
  3. Step 3: Cross multiply
    154,641,681.56x = 213,399,781.26 × 85,022,920.28
  4. Step 4: Simplify right side
    154,641,681.56x = 18,143,872,589,838,416
  5. Step 5: Solve for x
    x = 18,143,872,589,838,416/154,641,681.56
  6. Step 6: Final answer
    x = 117,328,474.49

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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.