Home / 128,776,553.60-193,164,830.40-77,632,246.40

Finding the Fourth Proportional to 128,776,553.60, 193,164,830.40 and 77,632,246.40

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Solution

The fourth proportional to 128,776,553.60, 193,164,830.40 and 77,632,246.40 is: 116,448,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776,553.60 : 193,164,830.40 = 77,632,246.40 : x
  2. Step 2: Convert to fraction form
    128,776,553.60/193,164,830.40 = 77,632,246.40/x
  3. Step 3: Cross multiply
    128,776,553.60x = 193,164,830.40 × 77,632,246.40
  4. Step 4: Simplify right side
    128,776,553.60x = 14,995,819,709,427,012
  5. Step 5: Solve for x
    x = 14,995,819,709,427,012/128,776,553.60
  6. Step 6: Final answer
    x = 116,448,369.60

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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.