Home / 129,057,611,309.65-178,100,057,304.04-70,397,711,630.47

Finding the Fourth Proportional to 129,057,611,309.65, 178,100,057,304.04 and 70,397,711,630.47

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Solution

The fourth proportional to 129,057,611,309.65, 178,100,057,304.04 and 70,397,711,630.47 is: 97,149,144,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,611,309.65 : 178,100,057,304.04 = 70,397,711,630.47 : x
  2. Step 2: Convert to fraction form
    129,057,611,309.65/178,100,057,304.04 = 70,397,711,630.47/x
  3. Step 3: Cross multiply
    129,057,611,309.65x = 178,100,057,304.04 × 70,397,711,630.47
  4. Step 4: Simplify right side
    129,057,611,309.65x = 12,537,836,475,459,991,240,704
  5. Step 5: Solve for x
    x = 12,537,836,475,459,991,240,704/129,057,611,309.65
  6. Step 6: Final answer
    x = 97,149,144,077.82

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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.