Home / 191,720,603,999.60-287,580,905,999.40-80,005,753,660.40

Finding the Fourth Proportional to 191,720,603,999.60, 287,580,905,999.40 and 80,005,753,660.40

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Solution

The fourth proportional to 191,720,603,999.60, 287,580,905,999.40 and 80,005,753,660.40 is: 120,008,630,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,720,603,999.60 : 287,580,905,999.40 = 80,005,753,660.40 : x
  2. Step 2: Convert to fraction form
    191,720,603,999.60/287,580,905,999.40 = 80,005,753,660.40/x
  3. Step 3: Cross multiply
    191,720,603,999.60x = 287,580,905,999.40 × 80,005,753,660.40
  4. Step 4: Simplify right side
    191,720,603,999.60x = 23,008,127,122,822,643,318,784
  5. Step 5: Solve for x
    x = 23,008,127,122,822,643,318,784/191,720,603,999.60
  6. Step 6: Final answer
    x = 120,008,630,490.60

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1.5x scale

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.