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Finding the Fourth Proportional to 56,662,368.40, 84,993,552.60 and 15,721,728.40

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Solution

The fourth proportional to 56,662,368.40, 84,993,552.60 and 15,721,728.40 is: 23,582,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,662,368.40 : 84,993,552.60 = 15,721,728.40 : x
  2. Step 2: Convert to fraction form
    56,662,368.40/84,993,552.60 = 15,721,728.40/x
  3. Step 3: Cross multiply
    56,662,368.40x = 84,993,552.60 × 15,721,728.40
  4. Step 4: Simplify right side
    56,662,368.40x = 1,336,245,549,728,313.75
  5. Step 5: Solve for x
    x = 1,336,245,549,728,313.75/56,662,368.40
  6. Step 6: Final answer
    x = 23,582,592.60

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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.