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Finding the Fourth Proportional to 623,579.40, 935,369.10 and 542,478.60

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Solution

The fourth proportional to 623,579.40, 935,369.10 and 542,478.60 is: 813,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,579.40 : 935,369.10 = 542,478.60 : x
  2. Step 2: Convert to fraction form
    623,579.40/935,369.10 = 542,478.60/x
  3. Step 3: Cross multiply
    623,579.40x = 935,369.10 × 542,478.60
  4. Step 4: Simplify right side
    623,579.40x = 507,417,719,851.26
  5. Step 5: Solve for x
    x = 507,417,719,851.26/623,579.40
  6. Step 6: Final answer
    x = 813,717.90

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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.