Home / 129,057,611,328.79-178,100,057,330.43-70,397,711,649.60

Finding the Fourth Proportional to 129,057,611,328.79, 178,100,057,330.43 and 70,397,711,649.60

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Solution

The fourth proportional to 129,057,611,328.79, 178,100,057,330.43 and 70,397,711,649.60 is: 97,149,144,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,611,328.79 : 178,100,057,330.43 = 70,397,711,649.60 : x
  2. Step 2: Convert to fraction form
    129,057,611,328.79/178,100,057,330.43 = 70,397,711,649.60/x
  3. Step 3: Cross multiply
    129,057,611,328.79x = 178,100,057,330.43 × 70,397,711,649.60
  4. Step 4: Simplify right side
    129,057,611,328.79x = 12,537,836,480,724,841,005,056
  5. Step 5: Solve for x
    x = 12,537,836,480,724,841,005,056/129,057,611,328.79
  6. Step 6: Final answer
    x = 97,149,144,104.20

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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.