Home / 81,570,442,426.56-111,751,904,811.96-78,513,200,657.82

Finding the Fourth Proportional to 81,570,442,426.56, 111,751,904,811.96 and 78,513,200,657.82

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Solution

The fourth proportional to 81,570,442,426.56, 111,751,904,811.96 and 78,513,200,657.82 is: 107,563,468,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570,442,426.56 : 111,751,904,811.96 = 78,513,200,657.82 : x
  2. Step 2: Convert to fraction form
    81,570,442,426.56/111,751,904,811.96 = 78,513,200,657.82/x
  3. Step 3: Cross multiply
    81,570,442,426.56x = 111,751,904,811.96 × 78,513,200,657.82
  4. Step 4: Simplify right side
    81,570,442,426.56x = 8,773,999,726,395,017,658,368
  5. Step 5: Solve for x
    x = 8,773,999,726,395,017,658,368/81,570,442,426.56
  6. Step 6: Final answer
    x = 107,563,468,646.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.