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Finding the Fourth Proportional to 98,663,771.07, 147,994,839.72 and 77,116,484.79

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Solution

The fourth proportional to 98,663,771.07, 147,994,839.72 and 77,116,484.79 is: 115,674,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,663,771.07 : 147,994,839.72 = 77,116,484.79 : x
  2. Step 2: Convert to fraction form
    98,663,771.07/147,994,839.72 = 77,116,484.79/x
  3. Step 3: Cross multiply
    98,663,771.07x = 147,994,839.72 × 77,116,484.79
  4. Step 4: Simplify right side
    98,663,771.07x = 11,412,841,806,265,868
  5. Step 5: Solve for x
    x = 11,412,841,806,265,868/98,663,771.07
  6. Step 6: Final answer
    x = 115,674,088.70

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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.