Home / 78,168,927.20-117,253,390.80-65,627,794.40

Finding the Fourth Proportional to 78,168,927.20, 117,253,390.80 and 65,627,794.40

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Solution

The fourth proportional to 78,168,927.20, 117,253,390.80 and 65,627,794.40 is: 98,441,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168,927.20 : 117,253,390.80 = 65,627,794.40 : x
  2. Step 2: Convert to fraction form
    78,168,927.20/117,253,390.80 = 65,627,794.40/x
  3. Step 3: Cross multiply
    78,168,927.20x = 117,253,390.80 × 65,627,794.40
  4. Step 4: Simplify right side
    78,168,927.20x = 7,695,081,424,125,251
  5. Step 5: Solve for x
    x = 7,695,081,424,125,251/78,168,927.20
  6. Step 6: Final answer
    x = 98,441,691.60

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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.