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Finding the Fourth Proportional to 85,953,602.40, 128,646,968.40 and 60,444,434.40

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Solution

The fourth proportional to 85,953,602.40, 128,646,968.40 and 60,444,434.40 is: 90,467,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,953,602.40 : 128,646,968.40 = 60,444,434.40 : x
  2. Step 2: Convert to fraction form
    85,953,602.40/128,646,968.40 = 60,444,434.40/x
  3. Step 3: Cross multiply
    85,953,602.40x = 128,646,968.40 × 60,444,434.40
  4. Step 4: Simplify right side
    85,953,602.40x = 7,775,993,242,212,673
  5. Step 5: Solve for x
    x = 7,775,993,242,212,673/85,953,602.40
  6. Step 6: Final answer
    x = 90,467,333.83

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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.