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Finding the Fourth Proportional to 940,564,492.54, 1,296,774,087.48 and 770,391,824.12

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Solution

The fourth proportional to 940,564,492.54, 1,296,774,087.48 and 770,391,824.12 is: 1,062,153,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,564,492.54 : 1,296,774,087.48 = 770,391,824.12 : x
  2. Step 2: Convert to fraction form
    940,564,492.54/1,296,774,087.48 = 770,391,824.12/x
  3. Step 3: Cross multiply
    940,564,492.54x = 1,296,774,087.48 × 770,391,824.12
  4. Step 4: Simplify right side
    940,564,492.54x = 999,024,154,725,265,664
  5. Step 5: Solve for x
    x = 999,024,154,725,265,664/940,564,492.54
  6. Step 6: Final answer
    x = 1,062,153,805.13

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1.5x scale

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.