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Finding the Fourth Proportional to 623,781.60, 935,672.40 and 584,415.60

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Solution

The fourth proportional to 623,781.60, 935,672.40 and 584,415.60 is: 876,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,781.60 : 935,672.40 = 584,415.60 : x
  2. Step 2: Convert to fraction form
    623,781.60/935,672.40 = 584,415.60/x
  3. Step 3: Cross multiply
    623,781.60x = 935,672.40 × 584,415.60
  4. Step 4: Simplify right side
    623,781.60x = 546,821,547,049.44
  5. Step 5: Solve for x
    x = 546,821,547,049.44/623,781.60
  6. Step 6: Final answer
    x = 876,623.40

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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.