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Finding the Fourth Proportional to 112,334,987.80, 168,502,481.70 and 91,927,653.40

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Solution

The fourth proportional to 112,334,987.80, 168,502,481.70 and 91,927,653.40 is: 137,891,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,334,987.80 : 168,502,481.70 = 91,927,653.40 : x
  2. Step 2: Convert to fraction form
    112,334,987.80/168,502,481.70 = 91,927,653.40/x
  3. Step 3: Cross multiply
    112,334,987.80x = 168,502,481.70 × 91,927,653.40
  4. Step 4: Simplify right side
    112,334,987.80x = 15,490,037,734,757,442
  5. Step 5: Solve for x
    x = 15,490,037,734,757,442/112,334,987.80
  6. Step 6: Final answer
    x = 137,891,480.10

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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.