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Finding the Fourth Proportional to 20,976,014.30, 29,426,139.70 and 20,976,014.30

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Solution

The fourth proportional to 20,976,014.30, 29,426,139.70 and 20,976,014.30 is: 29,426,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976,014.30 : 29,426,139.70 = 20,976,014.30 : x
  2. Step 2: Convert to fraction form
    20,976,014.30/29,426,139.70 = 20,976,014.30/x
  3. Step 3: Cross multiply
    20,976,014.30x = 29,426,139.70 × 20,976,014.30
  4. Step 4: Simplify right side
    20,976,014.30x = 617,243,127,140,997.75
  5. Step 5: Solve for x
    x = 617,243,127,140,997.75/20,976,014.30
  6. Step 6: Final answer
    x = 29,426,139.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.