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Finding the Fourth Proportional to 902,159,871.78, 1,351,141,279.72 and 877,334,934.08

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Solution

The fourth proportional to 902,159,871.78, 1,351,141,279.72 and 877,334,934.08 is: 1,313,961,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,159,871.78 : 1,351,141,279.72 = 877,334,934.08 : x
  2. Step 2: Convert to fraction form
    902,159,871.78/1,351,141,279.72 = 877,334,934.08/x
  3. Step 3: Cross multiply
    902,159,871.78x = 1,351,141,279.72 × 877,334,934.08
  4. Step 4: Simplify right side
    902,159,871.78x = 1,185,403,445,575,913,216
  5. Step 5: Solve for x
    x = 1,185,403,445,575,913,216/902,159,871.78
  6. Step 6: Final answer
    x = 1,313,961,618.84

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1.5x scale

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.