Home / 78,392,191-108,187,283.28-47,031,420.20

Finding the Fourth Proportional to 78,392,191, 108,187,283.28 and 47,031,420.20

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Solution

The fourth proportional to 78,392,191, 108,187,283.28 and 47,031,420.20 is: 64,906,995.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392,191 : 108,187,283.28 = 47,031,420.20 : x
  2. Step 2: Convert to fraction form
    78,392,191/108,187,283.28 = 47,031,420.20/x
  3. Step 3: Cross multiply
    78,392,191x = 108,187,283.28 × 47,031,420.20
  4. Step 4: Simplify right side
    78,392,191x = 5,088,201,580,238,115
  5. Step 5: Solve for x
    x = 5,088,201,580,238,115/78,392,191
  6. Step 6: Final answer
    x = 64,906,995.39

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1.5x scale

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.