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Finding the Fourth Proportional to 1,076,632.60, 1,614,948.90 and 976,905.40

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Solution

The fourth proportional to 1,076,632.60, 1,614,948.90 and 976,905.40 is: 1,465,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,632.60 : 1,614,948.90 = 976,905.40 : x
  2. Step 2: Convert to fraction form
    1,076,632.60/1,614,948.90 = 976,905.40/x
  3. Step 3: Cross multiply
    1,076,632.60x = 1,614,948.90 × 976,905.40
  4. Step 4: Simplify right side
    1,076,632.60x = 1,577,652,301,134.06
  5. Step 5: Solve for x
    x = 1,577,652,301,134.06/1,076,632.60
  6. Step 6: Final answer
    x = 1,465,358.10

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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.