Home / 19,115,806.40-28,626,470.40-12,691,275.20

Finding the Fourth Proportional to 19,115,806.40, 28,626,470.40 and 12,691,275.20

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Solution

The fourth proportional to 19,115,806.40, 28,626,470.40 and 12,691,275.20 is: 19,005,549.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115,806.40 : 28,626,470.40 = 12,691,275.20 : x
  2. Step 2: Convert to fraction form
    19,115,806.40/28,626,470.40 = 12,691,275.20/x
  3. Step 3: Cross multiply
    19,115,806.40x = 28,626,470.40 × 12,691,275.20
  4. Step 4: Simplify right side
    19,115,806.40x = 363,306,413,851,054.06
  5. Step 5: Solve for x
    x = 363,306,413,851,054.06/19,115,806.40
  6. Step 6: Final answer
    x = 19,005,549.98

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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.