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Finding the Fourth Proportional to 153,592,582.64, 211,957,782.01 and 83,978,010.68

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Solution

The fourth proportional to 153,592,582.64, 211,957,782.01 and 83,978,010.68 is: 115,889,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,592,582.64 : 211,957,782.01 = 83,978,010.68 : x
  2. Step 2: Convert to fraction form
    153,592,582.64/211,957,782.01 = 83,978,010.68/x
  3. Step 3: Cross multiply
    153,592,582.64x = 211,957,782.01 × 83,978,010.68
  4. Step 4: Simplify right side
    153,592,582.64x = 17,799,792,880,075,156
  5. Step 5: Solve for x
    x = 17,799,792,880,075,156/153,592,582.64
  6. Step 6: Final answer
    x = 115,889,664.56

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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.