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Finding the Fourth Proportional to 623,141.60, 934,712.40 and 386,751.20

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Solution

The fourth proportional to 623,141.60, 934,712.40 and 386,751.20 is: 580,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,141.60 : 934,712.40 = 386,751.20 : x
  2. Step 2: Convert to fraction form
    623,141.60/934,712.40 = 386,751.20/x
  3. Step 3: Cross multiply
    623,141.60x = 934,712.40 × 386,751.20
  4. Step 4: Simplify right side
    623,141.60x = 361,501,142,354.88
  5. Step 5: Solve for x
    x = 361,501,142,354.88/623,141.60
  6. Step 6: Final answer
    x = 580,126.80

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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.