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Finding the Fourth Proportional to 6,390,952.55, 8,819,732.14 and 3,779,695.06

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Solution

The fourth proportional to 6,390,952.55, 8,819,732.14 and 3,779,695.06 is: 5,216,107.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390,952.55 : 8,819,732.14 = 3,779,695.06 : x
  2. Step 2: Convert to fraction form
    6,390,952.55/8,819,732.14 = 3,779,695.06/x
  3. Step 3: Cross multiply
    6,390,952.55x = 8,819,732.14 × 3,779,695.06
  4. Step 4: Simplify right side
    6,390,952.55x = 33,335,898,000,081.23
  5. Step 5: Solve for x
    x = 33,335,898,000,081.23/6,390,952.55
  6. Step 6: Final answer
    x = 5,216,107.89

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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.