Home / 21,191,354.50-31,791,770.25-7,728,182.50

Finding the Fourth Proportional to 21,191,354.50, 31,791,770.25 and 7,728,182.50

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Solution

The fourth proportional to 21,191,354.50, 31,791,770.25 and 7,728,182.50 is: 11,594,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191,354.50 : 31,791,770.25 = 7,728,182.50 : x
  2. Step 2: Convert to fraction form
    21,191,354.50/31,791,770.25 = 7,728,182.50/x
  3. Step 3: Cross multiply
    21,191,354.50x = 31,791,770.25 × 7,728,182.50
  4. Step 4: Simplify right side
    21,191,354.50x = 245,692,602,490,070.62
  5. Step 5: Solve for x
    x = 245,692,602,490,070.62/21,191,354.50
  6. Step 6: Final answer
    x = 11,594,001.81

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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.