Home / 84,986,567.40-127,479,851.10-78,290,410.80

Finding the Fourth Proportional to 84,986,567.40, 127,479,851.10 and 78,290,410.80

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Solution

The fourth proportional to 84,986,567.40, 127,479,851.10 and 78,290,410.80 is: 117,435,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,986,567.40 : 127,479,851.10 = 78,290,410.80 : x
  2. Step 2: Convert to fraction form
    84,986,567.40/127,479,851.10 = 78,290,410.80/x
  3. Step 3: Cross multiply
    84,986,567.40x = 127,479,851.10 × 78,290,410.80
  4. Step 4: Simplify right side
    84,986,567.40x = 9,980,449,911,341,832
  5. Step 5: Solve for x
    x = 9,980,449,911,341,832/84,986,567.40
  6. Step 6: Final answer
    x = 117,435,616.20

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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.