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Finding the Fourth Proportional to 611,571,617.10, 917,357,425.65 and 382,248,045.90

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Solution

The fourth proportional to 611,571,617.10, 917,357,425.65 and 382,248,045.90 is: 573,372,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,571,617.10 : 917,357,425.65 = 382,248,045.90 : x
  2. Step 2: Convert to fraction form
    611,571,617.10/917,357,425.65 = 382,248,045.90/x
  3. Step 3: Cross multiply
    611,571,617.10x = 917,357,425.65 × 382,248,045.90
  4. Step 4: Simplify right side
    611,571,617.10x = 350,658,083,346,566,976
  5. Step 5: Solve for x
    x = 350,658,083,346,566,976/611,571,617.10
  6. Step 6: Final answer
    x = 573,372,068.85

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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.