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Finding the Fourth Proportional to 924,165.60, 1,386,291.60 and 293,128.80

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Solution

The fourth proportional to 924,165.60, 1,386,291.60 and 293,128.80 is: 439,706.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,165.60 : 1,386,291.60 = 293,128.80 : x
  2. Step 2: Convert to fraction form
    924,165.60/1,386,291.60 = 293,128.80/x
  3. Step 3: Cross multiply
    924,165.60x = 1,386,291.60 × 293,128.80
  4. Step 4: Simplify right side
    924,165.60x = 406,361,993,158.08
  5. Step 5: Solve for x
    x = 406,361,993,158.08/924,165.60
  6. Step 6: Final answer
    x = 439,706.90

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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.