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Finding the Fourth Proportional to 1,007,808.03, 1,390,774.86 and 555,099.03

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Solution

The fourth proportional to 1,007,808.03, 1,390,774.86 and 555,099.03 is: 766,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,808.03 : 1,390,774.86 = 555,099.03 : x
  2. Step 2: Convert to fraction form
    1,007,808.03/1,390,774.86 = 555,099.03/x
  3. Step 3: Cross multiply
    1,007,808.03x = 1,390,774.86 × 555,099.03
  4. Step 4: Simplify right side
    1,007,808.03x = 772,017,775,734.39
  5. Step 5: Solve for x
    x = 772,017,775,734.39/1,007,808.03
  6. Step 6: Final answer
    x = 766,036.54

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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.