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Finding the Fourth Proportional to 623,577.60, 935,366.40 and 434,620.80

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Solution

The fourth proportional to 623,577.60, 935,366.40 and 434,620.80 is: 651,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,577.60 : 935,366.40 = 434,620.80 : x
  2. Step 2: Convert to fraction form
    623,577.60/935,366.40 = 434,620.80/x
  3. Step 3: Cross multiply
    623,577.60x = 935,366.40 × 434,620.80
  4. Step 4: Simplify right side
    623,577.60x = 406,529,693,061.12
  5. Step 5: Solve for x
    x = 406,529,693,061.12/623,577.60
  6. Step 6: Final answer
    x = 651,931.20

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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.