Home / 12,286,807.80-18,406,710.90-6,605,143.80

Finding the Fourth Proportional to 12,286,807.80, 18,406,710.90 and 6,605,143.80

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Solution

The fourth proportional to 12,286,807.80, 18,406,710.90 and 6,605,143.80 is: 9,895,082.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286,807.80 : 18,406,710.90 = 6,605,143.80 : x
  2. Step 2: Convert to fraction form
    12,286,807.80/18,406,710.90 = 6,605,143.80/x
  3. Step 3: Cross multiply
    12,286,807.80x = 18,406,710.90 × 6,605,143.80
  4. Step 4: Simplify right side
    12,286,807.80x = 121,578,972,379,527.41
  5. Step 5: Solve for x
    x = 121,578,972,379,527.41/12,286,807.80
  6. Step 6: Final answer
    x = 9,895,082.14

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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.