Home / 105,663,968.32-145,754,505.92-66,443,651.52

Finding the Fourth Proportional to 105,663,968.32, 145,754,505.92 and 66,443,651.52

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Solution

The fourth proportional to 105,663,968.32, 145,754,505.92 and 66,443,651.52 is: 91,653,396.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,663,968.32 : 145,754,505.92 = 66,443,651.52 : x
  2. Step 2: Convert to fraction form
    105,663,968.32/145,754,505.92 = 66,443,651.52/x
  3. Step 3: Cross multiply
    105,663,968.32x = 145,754,505.92 × 66,443,651.52
  4. Step 4: Simplify right side
    105,663,968.32x = 9,684,461,598,818,256
  5. Step 5: Solve for x
    x = 9,684,461,598,818,256/105,663,968.32
  6. Step 6: Final answer
    x = 91,653,396.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.