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Finding the Fourth Proportional to 933,326.40, 1,401,026.40 and 578,740.80

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Solution

The fourth proportional to 933,326.40, 1,401,026.40 and 578,740.80 is: 868,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,326.40 : 1,401,026.40 = 578,740.80 : x
  2. Step 2: Convert to fraction form
    933,326.40/1,401,026.40 = 578,740.80/x
  3. Step 3: Cross multiply
    933,326.40x = 1,401,026.40 × 578,740.80
  4. Step 4: Simplify right side
    933,326.40x = 810,831,139,557.12
  5. Step 5: Solve for x
    x = 810,831,139,557.12/933,326.40
  6. Step 6: Final answer
    x = 868,754.10

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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.