Home / 66,401,436.80-99,602,155.20-20,957,326.40

Finding the Fourth Proportional to 66,401,436.80, 99,602,155.20 and 20,957,326.40

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Solution

The fourth proportional to 66,401,436.80, 99,602,155.20 and 20,957,326.40 is: 31,435,989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,401,436.80 : 99,602,155.20 = 20,957,326.40 : x
  2. Step 2: Convert to fraction form
    66,401,436.80/99,602,155.20 = 20,957,326.40/x
  3. Step 3: Cross multiply
    66,401,436.80x = 99,602,155.20 × 20,957,326.40
  4. Step 4: Simplify right side
    66,401,436.80x = 2,087,394,876,669,857.25
  5. Step 5: Solve for x
    x = 2,087,394,876,669,857.25/66,401,436.80
  6. Step 6: Final answer
    x = 31,435,989.60

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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.