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Finding the Fourth Proportional to 366,012,603.60, 549,018,905.40 and 123,672,008.40

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Solution

The fourth proportional to 366,012,603.60, 549,018,905.40 and 123,672,008.40 is: 185,508,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,012,603.60 : 549,018,905.40 = 123,672,008.40 : x
  2. Step 2: Convert to fraction form
    366,012,603.60/549,018,905.40 = 123,672,008.40/x
  3. Step 3: Cross multiply
    366,012,603.60x = 549,018,905.40 × 123,672,008.40
  4. Step 4: Simplify right side
    366,012,603.60x = 67,898,270,680,387,608
  5. Step 5: Solve for x
    x = 67,898,270,680,387,608/366,012,603.60
  6. Step 6: Final answer
    x = 185,508,012.60

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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.