Home / 19,152,079.60-28,728,119.40-11,971,721.20

Finding the Fourth Proportional to 19,152,079.60, 28,728,119.40 and 11,971,721.20

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Solution

The fourth proportional to 19,152,079.60, 28,728,119.40 and 11,971,721.20 is: 17,957,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152,079.60 : 28,728,119.40 = 11,971,721.20 : x
  2. Step 2: Convert to fraction form
    19,152,079.60/28,728,119.40 = 11,971,721.20/x
  3. Step 3: Cross multiply
    19,152,079.60x = 28,728,119.40 × 11,971,721.20
  4. Step 4: Simplify right side
    19,152,079.60x = 343,925,036,057,111.25
  5. Step 5: Solve for x
    x = 343,925,036,057,111.25/19,152,079.60
  6. Step 6: Final answer
    x = 17,957,581.80

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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.