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Finding the Fourth Proportional to 9,980,807.20, 14,971,210.80 and 9,700,871.20

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Solution

The fourth proportional to 9,980,807.20, 14,971,210.80 and 9,700,871.20 is: 14,551,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980,807.20 : 14,971,210.80 = 9,700,871.20 : x
  2. Step 2: Convert to fraction form
    9,980,807.20/14,971,210.80 = 9,700,871.20/x
  3. Step 3: Cross multiply
    9,980,807.20x = 14,971,210.80 × 9,700,871.20
  4. Step 4: Simplify right side
    9,980,807.20x = 145,233,787,678,848.97
  5. Step 5: Solve for x
    x = 145,233,787,678,848.97/9,980,807.20
  6. Step 6: Final answer
    x = 14,551,306.80

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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.