Home / 191,818,810.80-287,728,216.20-70,634,516.40

Finding the Fourth Proportional to 191,818,810.80, 287,728,216.20 and 70,634,516.40

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Solution

The fourth proportional to 191,818,810.80, 287,728,216.20 and 70,634,516.40 is: 105,951,774.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,818,810.80 : 287,728,216.20 = 70,634,516.40 : x
  2. Step 2: Convert to fraction form
    191,818,810.80/287,728,216.20 = 70,634,516.40/x
  3. Step 3: Cross multiply
    191,818,810.80x = 287,728,216.20 × 70,634,516.40
  4. Step 4: Simplify right side
    191,818,810.80x = 20,323,543,405,921,648
  5. Step 5: Solve for x
    x = 20,323,543,405,921,648/191,818,810.80
  6. Step 6: Final answer
    x = 105,951,774.60

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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.