Home / 129,057,611,329.10-178,100,057,330.86-70,397,711,649.91

Finding the Fourth Proportional to 129,057,611,329.10, 178,100,057,330.86 and 70,397,711,649.91

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Solution

The fourth proportional to 129,057,611,329.10, 178,100,057,330.86 and 70,397,711,649.91 is: 97,149,144,104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,611,329.10 : 178,100,057,330.86 = 70,397,711,649.91 : x
  2. Step 2: Convert to fraction form
    129,057,611,329.10/178,100,057,330.86 = 70,397,711,649.91/x
  3. Step 3: Cross multiply
    129,057,611,329.10x = 178,100,057,330.86 × 70,397,711,649.91
  4. Step 4: Simplify right side
    129,057,611,329.10x = 12,537,836,480,810,320,920,576
  5. Step 5: Solve for x
    x = 12,537,836,480,810,320,920,576/129,057,611,329.10
  6. Step 6: Final answer
    x = 97,149,144,104.63

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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.