Home / 128,776,609.60-193,164,914.40-77,632,302.40

Finding the Fourth Proportional to 128,776,609.60, 193,164,914.40 and 77,632,302.40

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Solution

The fourth proportional to 128,776,609.60, 193,164,914.40 and 77,632,302.40 is: 116,448,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776,609.60 : 193,164,914.40 = 77,632,302.40 : x
  2. Step 2: Convert to fraction form
    128,776,609.60/193,164,914.40 = 77,632,302.40/x
  3. Step 3: Cross multiply
    128,776,609.60x = 193,164,914.40 × 77,632,302.40
  4. Step 4: Simplify right side
    128,776,609.60x = 14,995,837,047,770,916
  5. Step 5: Solve for x
    x = 14,995,837,047,770,916/128,776,609.60
  6. Step 6: Final answer
    x = 116,448,453.60

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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.