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Finding the Fourth Proportional to 623,920.10, 935,880.15 and 340,484.90

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Solution

The fourth proportional to 623,920.10, 935,880.15 and 340,484.90 is: 510,727.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,920.10 : 935,880.15 = 340,484.90 : x
  2. Step 2: Convert to fraction form
    623,920.10/935,880.15 = 340,484.90/x
  3. Step 3: Cross multiply
    623,920.10x = 935,880.15 × 340,484.90
  4. Step 4: Simplify right side
    623,920.10x = 318,653,059,284.74
  5. Step 5: Solve for x
    x = 318,653,059,284.74/623,920.10
  6. Step 6: Final answer
    x = 510,727.35

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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.