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Finding the Fourth Proportional to 1,408,258.93, 1,943,397.81 and 763,678.96

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Solution

The fourth proportional to 1,408,258.93, 1,943,397.81 and 763,678.96 is: 1,053,877.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,258.93 : 1,943,397.81 = 763,678.96 : x
  2. Step 2: Convert to fraction form
    1,408,258.93/1,943,397.81 = 763,678.96/x
  3. Step 3: Cross multiply
    1,408,258.93x = 1,943,397.81 × 763,678.96
  4. Step 4: Simplify right side
    1,408,258.93x = 1,484,132,018,407.08
  5. Step 5: Solve for x
    x = 1,484,132,018,407.08/1,408,258.93
  6. Step 6: Final answer
    x = 1,053,877.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.