Home / 99,885,899.84-137,853,732-56,428,635.20

Finding the Fourth Proportional to 99,885,899.84, 137,853,732 and 56,428,635.20

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Solution

The fourth proportional to 99,885,899.84, 137,853,732 and 56,428,635.20 is: 77,877,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,885,899.84 : 137,853,732 = 56,428,635.20 : x
  2. Step 2: Convert to fraction form
    99,885,899.84/137,853,732 = 56,428,635.20/x
  3. Step 3: Cross multiply
    99,885,899.84x = 137,853,732 × 56,428,635.20
  4. Step 4: Simplify right side
    99,885,899.84x = 7,778,897,953,986,567
  5. Step 5: Solve for x
    x = 7,778,897,953,986,567/99,885,899.84
  6. Step 6: Final answer
    x = 77,877,838.28

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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.