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Finding the Fourth Proportional to 658,078,993.72, 907,619,482.10 and 578,523,955

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Solution

The fourth proportional to 658,078,993.72, 907,619,482.10 and 578,523,955 is: 797,897,543.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,078,993.72 : 907,619,482.10 = 578,523,955 : x
  2. Step 2: Convert to fraction form
    658,078,993.72/907,619,482.10 = 578,523,955/x
  3. Step 3: Cross multiply
    658,078,993.72x = 907,619,482.10 × 578,523,955
  4. Step 4: Simplify right side
    658,078,993.72x = 525,079,612,419,543,744
  5. Step 5: Solve for x
    x = 525,079,612,419,543,744/658,078,993.72
  6. Step 6: Final answer
    x = 797,897,543.35

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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.