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Finding the Fourth Proportional to 534,783.40, 802,175.10 and 415,810.60

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Solution

The fourth proportional to 534,783.40, 802,175.10 and 415,810.60 is: 623,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,783.40 : 802,175.10 = 415,810.60 : x
  2. Step 2: Convert to fraction form
    534,783.40/802,175.10 = 415,810.60/x
  3. Step 3: Cross multiply
    534,783.40x = 802,175.10 × 415,810.60
  4. Step 4: Simplify right side
    534,783.40x = 333,552,909,636.06
  5. Step 5: Solve for x
    x = 333,552,909,636.06/534,783.40
  6. Step 6: Final answer
    x = 623,715.90

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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.