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Finding the Fourth Proportional to 612,699.59, 845,400.30 and 358,001.57

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Solution

The fourth proportional to 612,699.59, 845,400.30 and 358,001.57 is: 493,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,699.59 : 845,400.30 = 358,001.57 : x
  2. Step 2: Convert to fraction form
    612,699.59/845,400.30 = 358,001.57/x
  3. Step 3: Cross multiply
    612,699.59x = 845,400.30 × 358,001.57
  4. Step 4: Simplify right side
    612,699.59x = 302,654,634,678.47
  5. Step 5: Solve for x
    x = 302,654,634,678.47/612,699.59
  6. Step 6: Final answer
    x = 493,969.05

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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.