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Finding the Fourth Proportional to 76,808,217.55, 115,212,326.33 and 76,808,217.55

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Solution

The fourth proportional to 76,808,217.55, 115,212,326.33 and 76,808,217.55 is: 115,212,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,808,217.55 : 115,212,326.33 = 76,808,217.55 : x
  2. Step 2: Convert to fraction form
    76,808,217.55/115,212,326.33 = 76,808,217.55/x
  3. Step 3: Cross multiply
    76,808,217.55x = 115,212,326.33 × 76,808,217.55
  4. Step 4: Simplify right side
    76,808,217.55x = 8,849,253,425,196,233
  5. Step 5: Solve for x
    x = 8,849,253,425,196,233/76,808,217.55
  6. Step 6: Final answer
    x = 115,212,326.33

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Double scale
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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.