Home / 30,740,102.72-42,440,906.40-19,154,686.40

Finding the Fourth Proportional to 30,740,102.72, 42,440,906.40 and 19,154,686.40

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Solution

The fourth proportional to 30,740,102.72, 42,440,906.40 and 19,154,686.40 is: 26,445,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740,102.72 : 42,440,906.40 = 19,154,686.40 : x
  2. Step 2: Convert to fraction form
    30,740,102.72/42,440,906.40 = 19,154,686.40/x
  3. Step 3: Cross multiply
    30,740,102.72x = 42,440,906.40 × 19,154,686.40
  4. Step 4: Simplify right side
    30,740,102.72x = 812,942,252,623,752.88
  5. Step 5: Solve for x
    x = 812,942,252,623,752.88/30,740,102.72
  6. Step 6: Final answer
    x = 26,445,658.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.