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Finding the Fourth Proportional to 7,431,067.30, 10,390,897.10 and 7,431,067.30

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Solution

The fourth proportional to 7,431,067.30, 10,390,897.10 and 7,431,067.30 is: 10,390,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431,067.30 : 10,390,897.10 = 7,431,067.30 : x
  2. Step 2: Convert to fraction form
    7,431,067.30/10,390,897.10 = 7,431,067.30/x
  3. Step 3: Cross multiply
    7,431,067.30x = 10,390,897.10 × 7,431,067.30
  4. Step 4: Simplify right side
    7,431,067.30x = 77,215,455,657,474.83
  5. Step 5: Solve for x
    x = 77,215,455,657,474.83/7,431,067.30
  6. Step 6: Final answer
    x = 10,390,897.10

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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.