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Finding the Fourth Proportional to 661,875,855.01, 913,487,980 and 502,844,280.23

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Solution

The fourth proportional to 661,875,855.01, 913,487,980 and 502,844,280.23 is: 694,000,547.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,875,855.01 : 913,487,980 = 502,844,280.23 : x
  2. Step 2: Convert to fraction form
    661,875,855.01/913,487,980 = 502,844,280.23/x
  3. Step 3: Cross multiply
    661,875,855.01x = 913,487,980 × 502,844,280.23
  4. Step 4: Simplify right side
    661,875,855.01x = 459,342,205,801,856,640
  5. Step 5: Solve for x
    x = 459,342,205,801,856,640/661,875,855.01
  6. Step 6: Final answer
    x = 694,000,547.57

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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.