Home / 12,128,000.40-18,192,000.60-11,888,851.95

Finding the Fourth Proportional to 12,128,000.40, 18,192,000.60 and 11,888,851.95

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Solution

The fourth proportional to 12,128,000.40, 18,192,000.60 and 11,888,851.95 is: 17,833,277.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,000.40 : 18,192,000.60 = 11,888,851.95 : x
  2. Step 2: Convert to fraction form
    12,128,000.40/18,192,000.60 = 11,888,851.95/x
  3. Step 3: Cross multiply
    12,128,000.40x = 18,192,000.60 × 11,888,851.95
  4. Step 4: Simplify right side
    12,128,000.40x = 216,282,001,807,711.19
  5. Step 5: Solve for x
    x = 216,282,001,807,711.19/12,128,000.40
  6. Step 6: Final answer
    x = 17,833,277.93

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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.