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Finding the Fourth Proportional to 42,253,345.40, 63,380,018.10 and 42,253,345.40

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Solution

The fourth proportional to 42,253,345.40, 63,380,018.10 and 42,253,345.40 is: 63,380,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,253,345.40 : 63,380,018.10 = 42,253,345.40 : x
  2. Step 2: Convert to fraction form
    42,253,345.40/63,380,018.10 = 42,253,345.40/x
  3. Step 3: Cross multiply
    42,253,345.40x = 63,380,018.10 × 42,253,345.40
  4. Step 4: Simplify right side
    42,253,345.40x = 2,678,017,796,237,551.50
  5. Step 5: Solve for x
    x = 2,678,017,796,237,551.50/42,253,345.40
  6. Step 6: Final answer
    x = 63,380,018.10

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Double scale
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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.