Home / 128,923,417.20-193,385,125.80-127,579,724.40

Finding the Fourth Proportional to 128,923,417.20, 193,385,125.80 and 127,579,724.40

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Solution

The fourth proportional to 128,923,417.20, 193,385,125.80 and 127,579,724.40 is: 191,369,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,923,417.20 : 193,385,125.80 = 127,579,724.40 : x
  2. Step 2: Convert to fraction form
    128,923,417.20/193,385,125.80 = 127,579,724.40/x
  3. Step 3: Cross multiply
    128,923,417.20x = 193,385,125.80 × 127,579,724.40
  4. Step 4: Simplify right side
    128,923,417.20x = 24,672,021,052,623,332
  5. Step 5: Solve for x
    x = 24,672,021,052,623,332/128,923,417.20
  6. Step 6: Final answer
    x = 191,369,586.60

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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.