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Finding the Fourth Proportional to 681,349.47, 940,254.73 and 386,997.13

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Solution

The fourth proportional to 681,349.47, 940,254.73 and 386,997.13 is: 534,051.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,349.47 : 940,254.73 = 386,997.13 : x
  2. Step 2: Convert to fraction form
    681,349.47/940,254.73 = 386,997.13/x
  3. Step 3: Cross multiply
    681,349.47x = 940,254.73 × 386,997.13
  4. Step 4: Simplify right side
    681,349.47x = 363,875,877,966.60
  5. Step 5: Solve for x
    x = 363,875,877,966.60/681,349.47
  6. Step 6: Final answer
    x = 534,051.75

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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.