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Finding the Fourth Proportional to 713,139,646.60, 1,069,709,469.90 and 651,917,643.40

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Solution

The fourth proportional to 713,139,646.60, 1,069,709,469.90 and 651,917,643.40 is: 977,876,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,139,646.60 : 1,069,709,469.90 = 651,917,643.40 : x
  2. Step 2: Convert to fraction form
    713,139,646.60/1,069,709,469.90 = 651,917,643.40/x
  3. Step 3: Cross multiply
    713,139,646.60x = 1,069,709,469.90 × 651,917,643.40
  4. Step 4: Simplify right side
    713,139,646.60x = 697,362,476,739,871,232
  5. Step 5: Solve for x
    x = 697,362,476,739,871,232/713,139,646.60
  6. Step 6: Final answer
    x = 977,876,465.10

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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.