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Finding the Fourth Proportional to 569,967.21, 786,577.91 and 315,314.01

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Solution

The fourth proportional to 569,967.21, 786,577.91 and 315,314.01 is: 435,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,967.21 : 786,577.91 = 315,314.01 : x
  2. Step 2: Convert to fraction form
    569,967.21/786,577.91 = 315,314.01/x
  3. Step 3: Cross multiply
    569,967.21x = 786,577.91 × 315,314.01
  4. Step 4: Simplify right side
    569,967.21x = 248,019,033,402.95
  5. Step 5: Solve for x
    x = 248,019,033,402.95/569,967.21
  6. Step 6: Final answer
    x = 435,146.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.