Home / 85,901,213.39-128,872,001.34-28,393,484.63

Finding the Fourth Proportional to 85,901,213.39, 128,872,001.34 and 28,393,484.63

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Solution

The fourth proportional to 85,901,213.39, 128,872,001.34 and 28,393,484.63 is: 42,596,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901,213.39 : 128,872,001.34 = 28,393,484.63 : x
  2. Step 2: Convert to fraction form
    85,901,213.39/128,872,001.34 = 28,393,484.63/x
  3. Step 3: Cross multiply
    85,901,213.39x = 128,872,001.34 × 28,393,484.63
  4. Step 4: Simplify right side
    85,901,213.39x = 3,659,125,189,606,809.50
  5. Step 5: Solve for x
    x = 3,659,125,189,606,809.50/85,901,213.39
  6. Step 6: Final answer
    x = 42,596,897.59

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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.