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Finding the Fourth Proportional to 7,014,779.65, 9,671,640.42 and 5,362,973.78

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Solution

The fourth proportional to 7,014,779.65, 9,671,640.42 and 5,362,973.78 is: 7,394,210.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014,779.65 : 9,671,640.42 = 5,362,973.78 : x
  2. Step 2: Convert to fraction form
    7,014,779.65/9,671,640.42 = 5,362,973.78/x
  3. Step 3: Cross multiply
    7,014,779.65x = 9,671,640.42 × 5,362,973.78
  4. Step 4: Simplify right side
    7,014,779.65x = 51,868,753,955,233.32
  5. Step 5: Solve for x
    x = 51,868,753,955,233.32/7,014,779.65
  6. Step 6: Final answer
    x = 7,394,210.02

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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.