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Finding the Fourth Proportional to 9,980,916.20, 14,971,374.30 and 9,700,980.20

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Solution

The fourth proportional to 9,980,916.20, 14,971,374.30 and 9,700,980.20 is: 14,551,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980,916.20 : 14,971,374.30 = 9,700,980.20 : x
  2. Step 2: Convert to fraction form
    9,980,916.20/14,971,374.30 = 9,700,980.20/x
  3. Step 3: Cross multiply
    9,980,916.20x = 14,971,374.30 × 9,700,980.20
  4. Step 4: Simplify right side
    9,980,916.20x = 145,237,005,651,088.84
  5. Step 5: Solve for x
    x = 145,237,005,651,088.84/9,980,916.20
  6. Step 6: Final answer
    x = 14,551,470.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.