Home / 191,736,728.20-287,605,092.30-76,739,019.40

Finding the Fourth Proportional to 191,736,728.20, 287,605,092.30 and 76,739,019.40

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Solution

The fourth proportional to 191,736,728.20, 287,605,092.30 and 76,739,019.40 is: 115,108,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,736,728.20 : 287,605,092.30 = 76,739,019.40 : x
  2. Step 2: Convert to fraction form
    191,736,728.20/287,605,092.30 = 76,739,019.40/x
  3. Step 3: Cross multiply
    191,736,728.20x = 287,605,092.30 × 76,739,019.40
  4. Step 4: Simplify right side
    191,736,728.20x = 22,070,532,757,548,492
  5. Step 5: Solve for x
    x = 22,070,532,757,548,492/191,736,728.20
  6. Step 6: Final answer
    x = 115,108,529.10

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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.