Home / 123,660,010.40-185,490,015.60-42,889,143.20

Finding the Fourth Proportional to 123,660,010.40, 185,490,015.60 and 42,889,143.20

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Solution

The fourth proportional to 123,660,010.40, 185,490,015.60 and 42,889,143.20 is: 64,333,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,660,010.40 : 185,490,015.60 = 42,889,143.20 : x
  2. Step 2: Convert to fraction form
    123,660,010.40/185,490,015.60 = 42,889,143.20/x
  3. Step 3: Cross multiply
    123,660,010.40x = 185,490,015.60 × 42,889,143.20
  4. Step 4: Simplify right side
    123,660,010.40x = 7,955,507,841,238,634
  5. Step 5: Solve for x
    x = 7,955,507,841,238,634/123,660,010.40
  6. Step 6: Final answer
    x = 64,333,714.80

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Similar ratio
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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.