Home / 9,121,155.15-12,587,193.59-4,991,186.79

Finding the Fourth Proportional to 9,121,155.15, 12,587,193.59 and 4,991,186.79

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Solution

The fourth proportional to 9,121,155.15, 12,587,193.59 and 4,991,186.79 is: 6,887,837.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,155.15 : 12,587,193.59 = 4,991,186.79 : x
  2. Step 2: Convert to fraction form
    9,121,155.15/12,587,193.59 = 4,991,186.79/x
  3. Step 3: Cross multiply
    9,121,155.15x = 12,587,193.59 × 4,991,186.79
  4. Step 4: Simplify right side
    9,121,155.15x = 62,825,034,344,624.75
  5. Step 5: Solve for x
    x = 62,825,034,344,624.75/9,121,155.15
  6. Step 6: Final answer
    x = 6,887,837.48

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Double scale
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1.5x scale

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.