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Finding the Fourth Proportional to 538,441,661.80, 807,662,492.70 and 538,441,661.80

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Solution

The fourth proportional to 538,441,661.80, 807,662,492.70 and 538,441,661.80 is: 807,662,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,441,661.80 : 807,662,492.70 = 538,441,661.80 : x
  2. Step 2: Convert to fraction form
    538,441,661.80/807,662,492.70 = 538,441,661.80/x
  3. Step 3: Cross multiply
    538,441,661.80x = 807,662,492.70 × 538,441,661.80
  4. Step 4: Simplify right side
    538,441,661.80x = 434,879,134,742,918,336
  5. Step 5: Solve for x
    x = 434,879,134,742,918,336/538,441,661.80
  6. Step 6: Final answer
    x = 807,662,492.70

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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.