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Finding the Fourth Proportional to 66,537,943.90, 99,657,616.65 and 54,594,007.90

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Solution

The fourth proportional to 66,537,943.90, 99,657,616.65 and 54,594,007.90 is: 81,768,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,537,943.90 : 99,657,616.65 = 54,594,007.90 : x
  2. Step 2: Convert to fraction form
    66,537,943.90/99,657,616.65 = 54,594,007.90/x
  3. Step 3: Cross multiply
    66,537,943.90x = 99,657,616.65 × 54,594,007.90
  4. Step 4: Simplify right side
    66,537,943.90x = 5,440,708,710,685,272
  5. Step 5: Solve for x
    x = 5,440,708,710,685,272/66,537,943.90
  6. Step 6: Final answer
    x = 81,768,512.70

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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.