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Finding the Fourth Proportional to 864,825,866.64, 1,299,308,313.60 and 554,541,400.04

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Solution

The fourth proportional to 864,825,866.64, 1,299,308,313.60 and 554,541,400.04 is: 833,139,108.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,825,866.64 : 1,299,308,313.60 = 554,541,400.04 : x
  2. Step 2: Convert to fraction form
    864,825,866.64/1,299,308,313.60 = 554,541,400.04/x
  3. Step 3: Cross multiply
    864,825,866.64x = 1,299,308,313.60 × 554,541,400.04
  4. Step 4: Simplify right side
    864,825,866.64x = 720,520,251,300,858,752
  5. Step 5: Solve for x
    x = 720,520,251,300,858,752/864,825,866.64
  6. Step 6: Final answer
    x = 833,139,108.22

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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.