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Finding the Fourth Proportional to 623,729.60, 935,594.40 and 387,533.60

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Solution

The fourth proportional to 623,729.60, 935,594.40 and 387,533.60 is: 581,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,729.60 : 935,594.40 = 387,533.60 : x
  2. Step 2: Convert to fraction form
    623,729.60/935,594.40 = 387,533.60/x
  3. Step 3: Cross multiply
    623,729.60x = 935,594.40 × 387,533.60
  4. Step 4: Simplify right side
    623,729.60x = 362,574,265,971.84
  5. Step 5: Solve for x
    x = 362,574,265,971.84/623,729.60
  6. Step 6: Final answer
    x = 581,300.40

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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.