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Finding the Fourth Proportional to 539,094,939.80, 808,791,708.90 and 357,696,411.80

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Solution

The fourth proportional to 539,094,939.80, 808,791,708.90 and 357,696,411.80 is: 536,643,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,094,939.80 : 808,791,708.90 = 357,696,411.80 : x
  2. Step 2: Convert to fraction form
    539,094,939.80/808,791,708.90 = 357,696,411.80/x
  3. Step 3: Cross multiply
    539,094,939.80x = 808,791,708.90 × 357,696,411.80
  4. Step 4: Simplify right side
    539,094,939.80x = 289,301,892,167,120,128
  5. Step 5: Solve for x
    x = 289,301,892,167,120,128/539,094,939.80
  6. Step 6: Final answer
    x = 536,643,679.64

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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.