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Finding the Fourth Proportional to 926,663.60, 1,387,662.60 and 609,402.80

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Solution

The fourth proportional to 926,663.60, 1,387,662.60 and 609,402.80 is: 912,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,663.60 : 1,387,662.60 = 609,402.80 : x
  2. Step 2: Convert to fraction form
    926,663.60/1,387,662.60 = 609,402.80/x
  3. Step 3: Cross multiply
    926,663.60x = 1,387,662.60 × 609,402.80
  4. Step 4: Simplify right side
    926,663.60x = 845,645,473,895.28
  5. Step 5: Solve for x
    x = 845,645,473,895.28/926,663.60
  6. Step 6: Final answer
    x = 912,570.08

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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.