Home / 260,996,979.34-391,411,732.69-86,080,686.40

Finding the Fourth Proportional to 260,996,979.34, 391,411,732.69 and 86,080,686.40

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Solution

The fourth proportional to 260,996,979.34, 391,411,732.69 and 86,080,686.40 is: 129,093,412.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,996,979.34 : 391,411,732.69 = 86,080,686.40 : x
  2. Step 2: Convert to fraction form
    260,996,979.34/391,411,732.69 = 86,080,686.40/x
  3. Step 3: Cross multiply
    260,996,979.34x = 391,411,732.69 × 86,080,686.40
  4. Step 4: Simplify right side
    260,996,979.34x = 33,692,990,614,968,520
  5. Step 5: Solve for x
    x = 33,692,990,614,968,520/260,996,979.34
  6. Step 6: Final answer
    x = 129,093,412.12

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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.