Home / 85,873,850,356.50-128,643,201,214.08-66,898,288,180.38

Finding the Fourth Proportional to 85,873,850,356.50, 128,643,201,214.08 and 66,898,288,180.38

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Solution

The fourth proportional to 85,873,850,356.50, 128,643,201,214.08 and 66,898,288,180.38 is: 100,216,886,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,873,850,356.50 : 128,643,201,214.08 = 66,898,288,180.38 : x
  2. Step 2: Convert to fraction form
    85,873,850,356.50/128,643,201,214.08 = 66,898,288,180.38/x
  3. Step 3: Cross multiply
    85,873,850,356.50x = 128,643,201,214.08 × 66,898,288,180.38
  4. Step 4: Simplify right side
    85,873,850,356.50x = 8,606,009,947,266,134,048,768
  5. Step 5: Solve for x
    x = 8,606,009,947,266,134,048,768/85,873,850,356.50
  6. Step 6: Final answer
    x = 100,216,886,881.62

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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.