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Finding the Fourth Proportional to 19,425,643.20, 27,235,713.60 and 19,425,643.20

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Solution

The fourth proportional to 19,425,643.20, 27,235,713.60 and 19,425,643.20 is: 27,235,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,425,643.20 : 27,235,713.60 = 19,425,643.20 : x
  2. Step 2: Convert to fraction form
    19,425,643.20/27,235,713.60 = 19,425,643.20/x
  3. Step 3: Cross multiply
    19,425,643.20x = 27,235,713.60 × 19,425,643.20
  4. Step 4: Simplify right side
    19,425,643.20x = 529,071,254,690,987.50
  5. Step 5: Solve for x
    x = 529,071,254,690,987.50/19,425,643.20
  6. Step 6: Final answer
    x = 27,235,713.60

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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.