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Finding the Fourth Proportional to 72,894,001.50, 100,595,821.68 and 40,301,053.02

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Solution

The fourth proportional to 72,894,001.50, 100,595,821.68 and 40,301,053.02 is: 55,616,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,894,001.50 : 100,595,821.68 = 40,301,053.02 : x
  2. Step 2: Convert to fraction form
    72,894,001.50/100,595,821.68 = 40,301,053.02/x
  3. Step 3: Cross multiply
    72,894,001.50x = 100,595,821.68 × 40,301,053.02
  4. Step 4: Simplify right side
    72,894,001.50x = 4,054,117,543,116,146
  5. Step 5: Solve for x
    x = 4,054,117,543,116,146/72,894,001.50
  6. Step 6: Final answer
    x = 55,616,613.98

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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.