Home / 128,634,477.53-177,516,702.90-69,897,141.44

Finding the Fourth Proportional to 128,634,477.53, 177,516,702.90 and 69,897,141.44

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Solution

The fourth proportional to 128,634,477.53, 177,516,702.90 and 69,897,141.44 is: 96,458,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,634,477.53 : 177,516,702.90 = 69,897,141.44 : x
  2. Step 2: Convert to fraction form
    128,634,477.53/177,516,702.90 = 69,897,141.44/x
  3. Step 3: Cross multiply
    128,634,477.53x = 177,516,702.90 × 69,897,141.44
  4. Step 4: Simplify right side
    128,634,477.53x = 12,407,910,089,676,176
  5. Step 5: Solve for x
    x = 12,407,910,089,676,176/128,634,477.53
  6. Step 6: Final answer
    x = 96,458,665.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.