Home / 85,590,656,863.81-128,364,769,589.61-28,929,260,192.87

Finding the Fourth Proportional to 85,590,656,863.81, 128,364,769,589.61 and 28,929,260,192.87

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Solution

The fourth proportional to 85,590,656,863.81, 128,364,769,589.61 and 28,929,260,192.87 is: 43,386,719,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,590,656,863.81 : 128,364,769,589.61 = 28,929,260,192.87 : x
  2. Step 2: Convert to fraction form
    85,590,656,863.81/128,364,769,589.61 = 28,929,260,192.87/x
  3. Step 3: Cross multiply
    85,590,656,863.81x = 128,364,769,589.61 × 28,929,260,192.87
  4. Step 4: Simplify right side
    85,590,656,863.81x = 3,713,497,819,055,633,989,632
  5. Step 5: Solve for x
    x = 3,713,497,819,055,633,989,632/85,590,656,863.81
  6. Step 6: Final answer
    x = 43,386,719,475.29

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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.