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Finding the Fourth Proportional to 610,912.10, 916,368.15 and 571,546.10

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Solution

The fourth proportional to 610,912.10, 916,368.15 and 571,546.10 is: 857,319.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,912.10 : 916,368.15 = 571,546.10 : x
  2. Step 2: Convert to fraction form
    610,912.10/916,368.15 = 571,546.10/x
  3. Step 3: Cross multiply
    610,912.10x = 916,368.15 × 571,546.10
  4. Step 4: Simplify right side
    610,912.10x = 523,746,642,296.72
  5. Step 5: Solve for x
    x = 523,746,642,296.72/610,912.10
  6. Step 6: Final answer
    x = 857,319.15

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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.