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Finding the Fourth Proportional to 672,645,615.05, 1,008,968,422.58 and 672,645,615.05

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Solution

The fourth proportional to 672,645,615.05, 1,008,968,422.58 and 672,645,615.05 is: 1,008,968,422.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,645,615.05 : 1,008,968,422.58 = 672,645,615.05 : x
  2. Step 2: Convert to fraction form
    672,645,615.05/1,008,968,422.58 = 672,645,615.05/x
  3. Step 3: Cross multiply
    672,645,615.05x = 1,008,968,422.58 × 672,645,615.05
  4. Step 4: Simplify right side
    672,645,615.05x = 678,678,185,168,989,184
  5. Step 5: Solve for x
    x = 678,678,185,168,989,184/672,645,615.05
  6. Step 6: Final answer
    x = 1,008,968,422.58

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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.