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Finding the Fourth Proportional to 1,008,293,322.13, 1,391,543,978.01 and 611,785,192.03

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Solution

The fourth proportional to 1,008,293,322.13, 1,391,543,978.01 and 611,785,192.03 is: 844,323,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,293,322.13 : 1,391,543,978.01 = 611,785,192.03 : x
  2. Step 2: Convert to fraction form
    1,008,293,322.13/1,391,543,978.01 = 611,785,192.03/x
  3. Step 3: Cross multiply
    1,008,293,322.13x = 1,391,543,978.01 × 611,785,192.03
  4. Step 4: Simplify right side
    1,008,293,322.13x = 851,325,999,805,037,952
  5. Step 5: Solve for x
    x = 851,325,999,805,037,952/1,008,293,322.13
  6. Step 6: Final answer
    x = 844,323,750.96

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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.