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Finding the Fourth Proportional to 851,627,579.40, 1,175,197,019.55 and 475,254,649.62

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Solution

The fourth proportional to 851,627,579.40, 1,175,197,019.55 and 475,254,649.62 is: 655,824,049.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,627,579.40 : 1,175,197,019.55 = 475,254,649.62 : x
  2. Step 2: Convert to fraction form
    851,627,579.40/1,175,197,019.55 = 475,254,649.62/x
  3. Step 3: Cross multiply
    851,627,579.40x = 1,175,197,019.55 × 475,254,649.62
  4. Step 4: Simplify right side
    851,627,579.40x = 558,517,847,760,703,552
  5. Step 5: Solve for x
    x = 558,517,847,760,703,552/851,627,579.40
  6. Step 6: Final answer
    x = 655,824,049.47

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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.