Home / 85,195,428.60-127,793,142.90-70,078,884.60

Finding the Fourth Proportional to 85,195,428.60, 127,793,142.90 and 70,078,884.60

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Solution

The fourth proportional to 85,195,428.60, 127,793,142.90 and 70,078,884.60 is: 105,118,326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,195,428.60 : 127,793,142.90 = 70,078,884.60 : x
  2. Step 2: Convert to fraction form
    85,195,428.60/127,793,142.90 = 70,078,884.60/x
  3. Step 3: Cross multiply
    85,195,428.60x = 127,793,142.90 × 70,078,884.60
  4. Step 4: Simplify right side
    85,195,428.60x = 8,955,600,913,960,409
  5. Step 5: Solve for x
    x = 8,955,600,913,960,409/85,195,428.60
  6. Step 6: Final answer
    x = 105,118,326.90

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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.