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Finding the Fourth Proportional to 1,353,991, 1,868,507.60 and 750,417.88

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Solution

The fourth proportional to 1,353,991, 1,868,507.60 and 750,417.88 is: 1,035,576.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,991 : 1,868,507.60 = 750,417.88 : x
  2. Step 2: Convert to fraction form
    1,353,991/1,868,507.60 = 750,417.88/x
  3. Step 3: Cross multiply
    1,353,991x = 1,868,507.60 × 750,417.88
  4. Step 4: Simplify right side
    1,353,991x = 1,402,161,511,955.89
  5. Step 5: Solve for x
    x = 1,402,161,511,955.89/1,353,991
  6. Step 6: Final answer
    x = 1,035,576.69

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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.