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Finding the Fourth Proportional to 623,873.10, 935,809.65 and 618,624.30

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Solution

The fourth proportional to 623,873.10, 935,809.65 and 618,624.30 is: 927,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,873.10 : 935,809.65 = 618,624.30 : x
  2. Step 2: Convert to fraction form
    623,873.10/935,809.65 = 618,624.30/x
  3. Step 3: Cross multiply
    623,873.10x = 935,809.65 × 618,624.30
  4. Step 4: Simplify right side
    623,873.10x = 578,914,589,664.50
  5. Step 5: Solve for x
    x = 578,914,589,664.50/623,873.10
  6. Step 6: Final answer
    x = 927,936.45

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Double scale
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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.