Home / 85,130,013.23-127,695,021.57-20,433,818.29

Finding the Fourth Proportional to 85,130,013.23, 127,695,021.57 and 20,433,818.29

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Solution

The fourth proportional to 85,130,013.23, 127,695,021.57 and 20,433,818.29 is: 30,650,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130,013.23 : 127,695,021.57 = 20,433,818.29 : x
  2. Step 2: Convert to fraction form
    85,130,013.23/127,695,021.57 = 20,433,818.29/x
  3. Step 3: Cross multiply
    85,130,013.23x = 127,695,021.57 × 20,433,818.29
  4. Step 4: Simplify right side
    85,130,013.23x = 2,609,296,866,868,781.50
  5. Step 5: Solve for x
    x = 2,609,296,866,868,781.50/85,130,013.23
  6. Step 6: Final answer
    x = 30,650,727.85

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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.