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Finding the Fourth Proportional to 679,888,944.40, 1,019,833,416.60 and 623,201,904.40

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Solution

The fourth proportional to 679,888,944.40, 1,019,833,416.60 and 623,201,904.40 is: 934,802,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,888,944.40 : 1,019,833,416.60 = 623,201,904.40 : x
  2. Step 2: Convert to fraction form
    679,888,944.40/1,019,833,416.60 = 623,201,904.40/x
  3. Step 3: Cross multiply
    679,888,944.40x = 1,019,833,416.60 × 623,201,904.40
  4. Step 4: Simplify right side
    679,888,944.40x = 635,562,127,395,878,528
  5. Step 5: Solve for x
    x = 635,562,127,395,878,528/679,888,944.40
  6. Step 6: Final answer
    x = 934,802,856.60

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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.