Home / 30,172,205.70-45,258,308.55-11,980,739.70

Finding the Fourth Proportional to 30,172,205.70, 45,258,308.55 and 11,980,739.70

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Solution

The fourth proportional to 30,172,205.70, 45,258,308.55 and 11,980,739.70 is: 17,971,109.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172,205.70 : 45,258,308.55 = 11,980,739.70 : x
  2. Step 2: Convert to fraction form
    30,172,205.70/45,258,308.55 = 11,980,739.70/x
  3. Step 3: Cross multiply
    30,172,205.70x = 45,258,308.55 × 11,980,739.70
  4. Step 4: Simplify right side
    30,172,205.70x = 542,228,013,999,834.38
  5. Step 5: Solve for x
    x = 542,228,013,999,834.38/30,172,205.70
  6. Step 6: Final answer
    x = 17,971,109.55

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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.