Home / 85,881,858.60-128,778,659.10-25,289,711.40

Finding the Fourth Proportional to 85,881,858.60, 128,778,659.10 and 25,289,711.40

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Solution

The fourth proportional to 85,881,858.60, 128,778,659.10 and 25,289,711.40 is: 37,921,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,881,858.60 : 128,778,659.10 = 25,289,711.40 : x
  2. Step 2: Convert to fraction form
    85,881,858.60/128,778,659.10 = 25,289,711.40/x
  3. Step 3: Cross multiply
    85,881,858.60x = 128,778,659.10 × 25,289,711.40
  4. Step 4: Simplify right side
    85,881,858.60x = 3,256,775,123,117,983.50
  5. Step 5: Solve for x
    x = 3,256,775,123,117,983.50/85,881,858.60
  6. Step 6: Final answer
    x = 37,921,572.45

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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.