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Finding the Fourth Proportional to 995,975,999.70, 1,493,963,999.55 and 651,990,642.90

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Solution

The fourth proportional to 995,975,999.70, 1,493,963,999.55 and 651,990,642.90 is: 977,985,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,975,999.70 : 1,493,963,999.55 = 651,990,642.90 : x
  2. Step 2: Convert to fraction form
    995,975,999.70/1,493,963,999.55 = 651,990,642.90/x
  3. Step 3: Cross multiply
    995,975,999.70x = 1,493,963,999.55 × 651,990,642.90
  4. Step 4: Simplify right side
    995,975,999.70x = 974,050,548,536,059,776
  5. Step 5: Solve for x
    x = 974,050,548,536,059,776/995,975,999.70
  6. Step 6: Final answer
    x = 977,985,964.35

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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.