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Finding the Fourth Proportional to 38,221,812.15, 53,661,702.45 and 38,221,812.15

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Solution

The fourth proportional to 38,221,812.15, 53,661,702.45 and 38,221,812.15 is: 53,661,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,221,812.15 : 53,661,702.45 = 38,221,812.15 : x
  2. Step 2: Convert to fraction form
    38,221,812.15/53,661,702.45 = 38,221,812.15/x
  3. Step 3: Cross multiply
    38,221,812.15x = 53,661,702.45 × 38,221,812.15
  4. Step 4: Simplify right side
    38,221,812.15x = 2,051,047,510,693,094.75
  5. Step 5: Solve for x
    x = 2,051,047,510,693,094.75/38,221,812.15
  6. Step 6: Final answer
    x = 53,661,702.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.