Home / 128,952,353.60-193,428,530.40-85,905,632.60

Finding the Fourth Proportional to 128,952,353.60, 193,428,530.40 and 85,905,632.60

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Solution

The fourth proportional to 128,952,353.60, 193,428,530.40 and 85,905,632.60 is: 128,858,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,353.60 : 193,428,530.40 = 85,905,632.60 : x
  2. Step 2: Convert to fraction form
    128,952,353.60/193,428,530.40 = 85,905,632.60/x
  3. Step 3: Cross multiply
    128,952,353.60x = 193,428,530.40 × 85,905,632.60
  4. Step 4: Simplify right side
    128,952,353.60x = 16,616,600,266,900,330
  5. Step 5: Solve for x
    x = 16,616,600,266,900,330/128,952,353.60
  6. Step 6: Final answer
    x = 128,858,448.90

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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.