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Finding the Fourth Proportional to 459,091,818.90, 688,637,728.35 and 459,091,818.90

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Solution

The fourth proportional to 459,091,818.90, 688,637,728.35 and 459,091,818.90 is: 688,637,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,091,818.90 : 688,637,728.35 = 459,091,818.90 : x
  2. Step 2: Convert to fraction form
    459,091,818.90/688,637,728.35 = 459,091,818.90/x
  3. Step 3: Cross multiply
    459,091,818.90x = 688,637,728.35 × 459,091,818.90
  4. Step 4: Simplify right side
    459,091,818.90x = 316,147,947,271,365,568
  5. Step 5: Solve for x
    x = 316,147,947,271,365,568/459,091,818.90
  6. Step 6: Final answer
    x = 688,637,728.35

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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.