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Finding the Fourth Proportional to 571,221.96, 788,312.88 and 316,573.17

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Solution

The fourth proportional to 571,221.96, 788,312.88 and 316,573.17 is: 436,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,221.96 : 788,312.88 = 316,573.17 : x
  2. Step 2: Convert to fraction form
    571,221.96/788,312.88 = 316,573.17/x
  3. Step 3: Cross multiply
    571,221.96x = 788,312.88 × 316,573.17
  4. Step 4: Simplify right side
    571,221.96x = 249,558,707,373.43
  5. Step 5: Solve for x
    x = 249,558,707,373.43/571,221.96
  6. Step 6: Final answer
    x = 436,885.70

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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.