Home / 85,536,028.80-128,304,043.20-79,489,411.20

Finding the Fourth Proportional to 85,536,028.80, 128,304,043.20 and 79,489,411.20

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Solution

The fourth proportional to 85,536,028.80, 128,304,043.20 and 79,489,411.20 is: 119,234,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,028.80 : 128,304,043.20 = 79,489,411.20 : x
  2. Step 2: Convert to fraction form
    85,536,028.80/128,304,043.20 = 79,489,411.20/x
  3. Step 3: Cross multiply
    85,536,028.80x = 128,304,043.20 × 79,489,411.20
  4. Step 4: Simplify right side
    85,536,028.80x = 10,198,812,848,547,364
  5. Step 5: Solve for x
    x = 10,198,812,848,547,364/85,536,028.80
  6. Step 6: Final answer
    x = 119,234,116.80

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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.