Home / 81,980,841,500.40-122,988,034,332.96-28,190,991,194.96

Finding the Fourth Proportional to 81,980,841,500.40, 122,988,034,332.96 and 28,190,991,194.96

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Solution

The fourth proportional to 81,980,841,500.40, 122,988,034,332.96 and 28,190,991,194.96 is: 42,292,254,257.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,980,841,500.40 : 122,988,034,332.96 = 28,190,991,194.96 : x
  2. Step 2: Convert to fraction form
    81,980,841,500.40/122,988,034,332.96 = 28,190,991,194.96/x
  3. Step 3: Cross multiply
    81,980,841,500.40x = 122,988,034,332.96 × 28,190,991,194.96
  4. Step 4: Simplify right side
    81,980,841,500.40x = 3,467,154,592,965,913,477,120
  5. Step 5: Solve for x
    x = 3,467,154,592,965,913,477,120/81,980,841,500.40
  6. Step 6: Final answer
    x = 42,292,254,257.34

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1.5x scale

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.