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Finding the Fourth Proportional to 20,465,402,407.90, 30,698,103,611.85 and 20,465,402,407.90

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Solution

The fourth proportional to 20,465,402,407.90, 30,698,103,611.85 and 20,465,402,407.90 is: 30,698,103,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465,402,407.90 : 30,698,103,611.85 = 20,465,402,407.90 : x
  2. Step 2: Convert to fraction form
    20,465,402,407.90/30,698,103,611.85 = 20,465,402,407.90/x
  3. Step 3: Cross multiply
    20,465,402,407.90x = 30,698,103,611.85 × 20,465,402,407.90
  4. Step 4: Simplify right side
    20,465,402,407.90x = 628,249,043,575,918,690,304
  5. Step 5: Solve for x
    x = 628,249,043,575,918,690,304/20,465,402,407.90
  6. Step 6: Final answer
    x = 30,698,103,611.85

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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.