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Finding the Fourth Proportional to 8,955,605.72, 12,366,487.12 and 8,495,918.16

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Solution

The fourth proportional to 8,955,605.72, 12,366,487.12 and 8,495,918.16 is: 11,731,720.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955,605.72 : 12,366,487.12 = 8,495,918.16 : x
  2. Step 2: Convert to fraction form
    8,955,605.72/12,366,487.12 = 8,495,918.16/x
  3. Step 3: Cross multiply
    8,955,605.72x = 12,366,487.12 × 8,495,918.16
  4. Step 4: Simplify right side
    8,955,605.72x = 105,064,662,498,214.09
  5. Step 5: Solve for x
    x = 105,064,662,498,214.09/8,955,605.72
  6. Step 6: Final answer
    x = 11,731,720.42

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1.5x scale

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.