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Finding the Fourth Proportional to 623,911.10, 935,866.65 and 618,662.30

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Solution

The fourth proportional to 623,911.10, 935,866.65 and 618,662.30 is: 927,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,911.10 : 935,866.65 = 618,662.30 : x
  2. Step 2: Convert to fraction form
    623,911.10/935,866.65 = 618,662.30/x
  3. Step 3: Cross multiply
    623,911.10x = 935,866.65 × 618,662.30
  4. Step 4: Simplify right side
    623,911.10x = 578,985,414,182.30
  5. Step 5: Solve for x
    x = 578,985,414,182.30/623,911.10
  6. Step 6: Final answer
    x = 927,993.45

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Similar ratio
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1.5x scale

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.